Rick Beato
Sergio Mendes's 1983 hit 'Never Gonna Let You Go' disguised constant jazz modulations inside top-40 radio, establishing a peak of harmonic density modern pop songwriting has since abandoned.
AI-assisted summary of The Most COMPLEX Pop Song of All Time — original source. Check the original for full context.
Source published:
Key ideas
- Rick Beato identifies Sergio Mendes' 1983 hit 'Never Gonna Let You Go', penned by Brill Building songwriters Barry Mann and Cynthia Weil, as arguably the most harmonically complex pop hit ever recorded. (0:00)
- The composition masterfully masks dense jazz theory—including abrupt half-step modulations within verses and choruses, complex slash chords, and deceptive mediant substitutions—behind an accessible pop vocal melody. (6:16)
- A signature ascending three-major-chord whole-step sequence continuously shifts pitch levels throughout the song, moving from D–E–F# to Db–Eb–F and finally landing on Gb–Ab–Bb in the climactic out-chorus. (17:40)
- Beato benchmarks the track against contemporary radio hits to argue that commercial pop songwriting over the past 40 years has overwhelmingly abandoned harmonic richness in favor of minimalist, static chord loops. (18:59)
Detailed notes
## Background Published by Rick Beato on YouTube on June 23, 2021, this video sets out to answer whether a specific hit is the most complex pop song ever written. In the page description, Beato introduces his breakdown while promoting his educational music resources, including The Beato Book Interactive, his Ear Training Program, and guitar courses.
## TL;DR Rick Beato breaks down the harmonic architecture of Sergio Mendes's 1983 hit ballad 'Never Gonna Let You Go', penned by legendary songwriters Barry Mann and Cynthia Weil. Recalling an infamous summer gig in Rochester where his jazz-trained band completely derailed trying to play the tune from memory for an audience of children, Beato analyzes its dizzying web of voice-leading, deceptive cadences, and relentless half-step modulations. Demonstrating the progression on piano and guitar, he explains how the song camouflages elite jazz theory under an accessible melody, contrasting its structural sophistication with the simpler, loop-based trends of modern commercial pop.
## Atmosphere & style The presentation strikes an engaging balance between scholarly music analysis and nostalgic comedic storytelling. Beato's delivery is animated, passionate, and warm, shifting seamlessly from technical fretboard demonstrations to infectious laughter as he recounts weeping with giggles on stage in front of confused elementary school kids. Watching the video feels like an intimate masterclass with a seasoned musician who genuinely marvels at forgotten studio craftsmanship while reveling in the humbling chaos of live performance.
## Bulletin - [00:00](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=0s) Rick Beato identifies Sergio Mendes' 1983 hit 'Never Gonna Let You Go', penned by Brill Building songwriters Barry Mann and Cynthia Weil, as arguably the most harmonically complex pop hit ever recorded. - [06:16](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=376s) The composition masterfully masks dense jazz theory—including abrupt half-step modulations within verses and choruses, complex slash chords, and deceptive mediant substitutions—behind an accessible pop vocal melody. - [17:40](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=1060s) A signature ascending three-major-chord whole-step sequence continuously shifts pitch levels throughout the song, moving from D–E–F# to Db–Eb–F and finally landing on Gb–Ab–Bb in the climactic out-chorus. - [18:59](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=1139s) Beato benchmarks the track against contemporary radio hits to argue that commercial pop songwriting over the past 40 years has overwhelmingly abandoned harmonic richness in favor of minimalist, static chord loops.
## Key takeaways - [00:00](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=0s) Pop music songwriting has grown progressively simpler and harmonically streamlined over the past three to four decades. - [00:00](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=0s) Trained jazz musicians routinely struggle to play 'Never Gonna Let You Go' by ear without a chart due to its atypical, unpredictable chord motion. - [00:00](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=0s) The song's intro progression in F# minor immediately jumps up a half step to G minor 7 to launch the first verse. - [02:27](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=147s) The verse destabilizes its key center early, starting in G minor before modulating down a minor third to E minor in its second half. - [02:27](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=147s) The pre-chorus relies on unconventional voice-leading and a minor ii–V cadence that resolves to a mediant tonic substitute chord rather than a standard root target. - [06:16](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=376s) Instead of remaining in one tonal home, the chorus plays its first half in F minor and then abruptly repeats the exact progression transposed up a half step in F# minor. - [06:16](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=376s) Brill Building songwriters Barry Mann and Cynthia Weil crafted an arrangement so challenging that live performers, including Sergio Mendes himself, often mimed along rather than tackling the voicings live. - [10:44](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=644s) Attempting to perform the arrangement by ear from a brief cassette listen led to an infamous stage breakdown for Beato and fretless bassist Paul Smitty in Rochester in 1983. - [15:09](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=909s) The solo section subverts expectations by setting up a standard minor ii–V progression meant for Cmaj7, only to deceptively resolve to Em7. - [15:09](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=909s) Rather than modulating upward to build energy as is customary in pop arranging, successive choruses drop down a half step. - [17:40](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=1060s) The motif of three ascending whole-step major chords is transposed to a completely new pitch center each time it reappears across the intro, middle, and outro sections. - [18:59](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=1139s) The track's greatest artistic feat is achieving major commercial success while switching key centers almost every bar without confusing casual radio listeners.
## Detailed walkthrough ### [00:00](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=0s) A Rochester Summer Gig and the "Never Gonna Let You Go" Challenge
Rick Beato opens by reflecting on his ongoing observation that pop music has become progressively less complex over the past 30 to 40 years. This thought led him to wonder what the single most complicated pop song he ever had to perform was. His mind immediately went back to the summer of 1983, right after his junior year of college, when his friend Paul "Smitty" Smith called him with an offer for a four-week gig. The job entailed traveling around Rochester, New York parks playing music for crowds of kids. The group was conceived as a pop ensemble that would also mix in some standards: Rick on guitar, Paul Smitty on bass, a drummer, a female lead vocalist, and saxophonist Terrance Bruce, who was already well known locally for playing in the funk band Cabo Frio.
At their very first rehearsal, the band was familiar with almost every tune proposed, except for one request brought in by the singer: the reigning hit ballad "Never Gonna Let You Go" by Sergio Mendes. Rick and Paul, being immersed in jazz and rarely listening to top-40 commercial radio, had never heard it. The singer brought along a cassette tape to play the track for them. Confident in their jazz chops, the musicians assumed learning a pop song would be trivial: “Play it for us we figure oh we can learn any song no problem we're Jazz guys right so she starts playing this song and it's like I'm like yeah oh that's weird.”
Upon hitting play, Rick immediately stopped her to rewind the cassette because the opening progression defied standard pop patterns. Calculating the theory on the spot, he realized the intro kicks off in F# minor, running through a Roman numeral progression of 6, 2, 5, 1 using inversions to 4, to 5, and then landing on a major VI (a borrowed chord) before abruptly jumping up a half step to G minor 7 to begin the verse.
```mermaid flowchart TD accTitle: Song Section Key Centers accDescr: Progression of starting chords across sections showing frequent key modulations. subgraph S1["Intro & Verse"] A["Intro: F# minor"] -->|"half-step modulation"| B["Verse (Part 1): G minor"] B -->|"modulate down"| C["Verse (Part 2): E minor"] end subgraph S2["Pre-Chorus & Chorus"] C --> D["Pre-Chorus: Bb sus2"] D -->|"minor ii-V tonic sub"| E["Pre-Chorus Ending: to F# minor"] E --> F["Chorus (Part 1): F minor"] F -->|"half-step modulation"| G["Chorus (Part 2): F# minor"] end ```
[02:27](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=147s) Dissecting the Intro, Verse, and the Pre-Chorus Labyrinth
Despite the bewildering harmony, Rick and Paul arrogantly believed they could play the song without writing out a chart for a live performance scheduled for later that same afternoon. Rick walks through the theoretical architecture on keyboard and guitar, demonstrating how quickly the song plunges into uncharted pop territory. After the intro in F# minor, the first half of the verse begins on G minor 7, only for the second half of the verse to suddenly modulate down to E minor.
The transition into the pre-chorus introduces chords that require advanced harmonic decoding. Rick points out voicing shifts like D11 (or C/D) moving to D/C, resolving down to a Bb sus2 or an Amin7(b6) / Fadd9/A. Analyzing the harmonic moves step by step, Rick marvels at how counterintuitive the voice-leading is:
> “Now normally you would have a half diminish or you'd go but what they've done is they went a minor 2 5 instead of going to D flat major they go to the to the three chord as a substitute that's actually like a tonic substitute but it's very confusing.”
- **Intro starting chord**: F# minor (cycling inversions of vi - ii - V - I - IV - V - VI). - **Verse 1 (First Half)**: G minor 7. - **Verse 1 (Second Half)**: E minor. - **Pre-Chorus**: Opens with a Bb sus2, navigates through slash chords (C/D, D/C, Fadd9/A), heads toward an unexpected minor ii–V cadence, and lands on a tonic substitute chord before resolving toward the chorus.
[06:16](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=376s) The Modulating Chorus and Songwriting Pedigree
When the arrangement hits the chorus, the complexity escalates further. The first half of the chorus establishes itself in F minor, cycling through Bb minor, Eb, Eb/Db, C minor 7, Db major, down through G7 to C. Instead of resolving predictably, the song abruptly shifts up a half step for the second half of the chorus: the entire chord progression repeats transposed up into F# minor and B minor 7. Rick emphasizes how extraordinary this is for a commercial hit: “What song modulates what this is a number one song so modulates the first half of the chorus is F minor to B flat 7 B flat minor 7 the second half of the chorus is F sharp minor to B minor 7 half Step Up same chord progression up at half step.”
The tag of the chorus finally wraps by recycling the last three chords of the intro—which Rick notes is the very first time in the entire composition that any harmonic material repeats. He explains the lineage behind the track: it was penned by the celebrated Brill Building songwriting team Cynthia Weil and Barry Mann. Sergio Mendes produced the record and released it under his name using elite Los Angeles session players across drums, guitars, and keyboards. Rick remarks that while Mendes appears playing keyboards in live performance footage, he suspected Mendes was merely miming along because the arrangement and voicings were so demanding.
The second verse introduces the female vocalist answering the male vocal lead from the first verse, following the exact same tortuous chord changes: G minor 7 to C/E, C/F to F major, downward modulations, and back into the dense pre-chorus.
| Song Section | Key / Starting Chords | Harmonic / Structural Characteristics | |:--- |:--- |:--- | | **Intro** | F# minor | Inversions of 6-2-5-1, IV, V, Major VI borrowed chord | | **Verse (Part 1)** | G minor 7 | Modulates up a half step from the intro; male lead | | **Verse (Part 2)** | E minor | Modulates down a minor third | | **Pre-Chorus** | Bb sus2, C/D, D/C, Fadd9/A | Dense slash chords, minor ii–V resolving to iii tonic substitute | | **Chorus (Part 1)** | F minor | Fm → Bbm7 → Eb → Eb/Db → Cm7 → Db → G7 → C | | **Chorus (Part 2)** | F# minor | Exactly transposes Part 1 up one half step (F#m → Bm7...) | | **Verse 2** | G minor → E minor | Female vocal lead over verse 1 changes | | **Solo Section** | Modulating (starts 1 chord/beat) | Saxophone solo, shifting up a tritone into the final chorus |
[10:44](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=644s) The Sax Solo and the Stage Meltdown
Following the second chorus, the song pivots into a solo section where Terrance Bruce performed the recorded keyboard solo on saxophone. Rick demonstrates how the solo section moves rapidly at one chord per beat before modulating up a tritone—one of the few moments where the functional harmony resolves in a textbook manner before twisting off into the third chorus.
Rick then recounts the disastrous reality of trying to play this song live in 1983. Having spent only 20 to 30 minutes hacking through the cassette, he and Paul Smitty took the stage before an audience of roughly one hundred children. Rick lost his place almost immediately. Paul, possessing a phenomenal musical memory, yelled out the roots from across the stage—shouting "E minor here! E minor, A minor!"—enabling Rick to recover while Terrance laughed into his saxophone. The performance was a mess, and the two singers cast scathing looks at the rhythm section afterward.
Determined to redeem themselves, Rick and Paul rehearsed the tune the following morning, convinced they had finally mastered it. However, during the afternoon set, disaster struck from the opposite direction halfway through verse one:
> “Paul gets lost but instead of me being the nice guy like Paul was helping me out the day before I decid to mess with him and I turned my guitar away from him so he can't see my hands and Paul starts laughing so hard and he keeps playing wrong bass note after wrong bass note and and it doesn't matter because even if I'm playing the wrong chords with the bass notes being wrong it sounds like me being wrong too and the singers are singing they can't even sing because it's just all wrong chords and they're trying to do this love duet right and we are screwing it up so royally and we're doubled over with laughter I walk back I've got tears streaming down from my face Paul does too then the audience it's all kid kids that are you know 10 years old 8 years old 12 years old and they're seeing us crack up on stage and just butchering this song but we kept going with it and we kind of get back on for a while and then we get off again and and it was the funniest thing it's literally the funniest gig that I've ever played in my life because it was so botched.”
Rick highlights the impossibility of Paul recovering on a fretless bass with no fret markers once visual contact with the guitar fretboard was cut off. The singers were trying to deliver an earnest, romantic love duet over a trainwreck of dissonant, clashing chords while the band was physically weeping with laughter in front of bewildered elementary school kids. Rick then turns back to the instrument to break down how the solo transitions out of its tritone modulation toward the third chorus through an eccentric revision of a traditional 2-5-1 cadence.
[15:09](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=909s) The Solo, the Deceptive Cadence, and Chorus Key Shifts
Rick Beato breaks down the harmonic machinery behind the solo section, observing how Barry Mann and Cynthia Weil leaned into sophisticated jazz vocabulary that somehow functioned invisibly within a chart-topping pop track. He explains that the progression sets up what sounds like a minor ii–V–I using Dm7♭5 and G7♯5, which would ordinarily resolve straight to Cmaj7. Instead, the song substitutes Em7 for the expected resolution chord. Beato marvels at the elegance of this move, highlighting how disguised these harmonic pivots are to the casual listener: “It's actually very brilliant to go there only a jazzer would think of this.” The astonishing feat of the track is that it became a massive hit despite switching key centers at a dizzying pace without alienating the listener.
```mermaid flowchart LR accTitle: Solo Resolution Cadence accDescr: Harmonic resolution flow from Dm7b5 to G7#5 substituting Em7 for Cmaj7
subgraph Setup ["Cadential Setup"] A["Dm7♭5 (ii chord)"] --> B["G7♯5 (V chord)"] end
subgraph Resolution ["Resolution Strategy"] B -.->|"Expected Target"| C["Cmaj7 (Tonic I)"] B ==>|"Actual Deceptive Substitution"| D["Em7 (iii chord sub)"] end ```
Moving out of the solo, the arrangement provides no relief, remaining unpredictable straight toward the ending. As Beato plays along with the recording at the piano, singing lines like “never going to let you go” and “to hold you in my heart,” he traces the keys across successive choruses. The first chorus kicks off in Em7 to Am7 to D, whereas the second chorus transposes down to Fm to B♭m to E♭, leaving the subsequent chorus a half step lower than the previous one. Beato stresses how disorienting this is for an instrumentalist performing from memory without a lead sheet. The movement defies standard pop intuition:
- The chord substitution replaces Cmaj7 with its relative mediant, Em7, forming an inventive deceptive cadence. - The shifting choruses do not follow an upward build; instead, the chorus drops down a half step, running counter to conventional pop arranging habits. - Rick emphasizes that memorization is virtually impossible without external guidance: “There's really nothing to grab on to so you really need to have a chart in front of you.”
---
[17:40](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=1060s) The Ascending Major Chords and the Out-Chorus
Beato highlights another signature harmonic motif in the tune: three straight major chords moving upward in whole steps. This recurring sequence shifts transpositional pitch levels every time it appears in the song structure. In the intro, the chords are D, E, and F♯. When the progression returns after the post-solo sections, the entire trio shifts down a half step to D♭, E♭, and F.
As the track drives into the out-chorus and guitar solo, the listener might assume the song has finally settled into a repeatable groove, but the arrangement throws another curveball. At the absolute climax, as the vocals belt out “let you go,” the three-chord sequence transposes to a completely different tonal plateau: F♯ major, G♯ major, and B♭ major (or enharmonically G♭, A♭, B♭). Beato compares all three iterations side by side to illustrate how restless the underlying harmony is:
| Section Appearance | Three-Major-Chord Sequence | Enharmonic Spelling | |:--- |:--- |:--- | | **Intro** | D – E – F♯ | D – E – F♯ | | **Post-Solo / Middle Chorus** | D♭ – E♭ – F | D♭ – E♭ – F | | **Out-Chorus / Ending** | F♯ – G♯ – B♭ | G♭ – A♭ – B♭ |
---
[18:59](https://www.youtube.com/watch?v=ZnRxTW8GxT8&t=1139s) Why Pop Music Has Lost This Complexity
Reflecting on the sheer volume of modulations, Beato crowns “Never Gonna Let You Go” as an unmatched peak of harmonic density in popular songwriting: “That is the most complicated hit song of all time the most complex chord progression yet when you're listen to it you're just like yeah okay yeah it just goes by you don't even realize that it's changing Keys like every other beat.” The track flows with such melodic grace that listeners singing along on their car radios never notice the harmonic labyrinth beneath it.
Beato uses this composition as a benchmark to argue how drastically songwriting priorities have shifted over the decades. Modern pop favors streamlined repetition and minimalist chord loops, making a track with dozens of key modulations nearly unthinkable in the current landscape: “When I say that pop music has gotten simpler over time well if that's not a great example of that can you imagine a song like that being on the radio today well I mean it's stylistically it's too weird but this is what used to pass for pop radio.” He concludes by encouraging viewers to study these sophisticated structures using his educational resources, directing them to his *Quick Lessons Pro Guitar Course* at quicklessons.pro and rickbeato.com, *The Beato Book* for in-depth chord progression studies, and his ear training program at beatoearcheck.com / beatotraining.com to learn how to identify such rapid interval and key changes by ear.
## Mentioned Rick Beato, Paul 'Smitty' Smith, Terrance Bruce, Cabo Frio, Sergio Mendes, Never Gonna Let You Go, Cynthia Weil, Barry Mann, Brill Building, The Beato Book, The Beato Ear Training Program, Quick Lessons Pro Guitar Course
## Video description Is this the most complex song ever? In this video I answer that question.
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[Source](https://www.youtube.com/watch?v=ZnRxTW8GxT8)