Auto-generated chord chart from YouTube analysis
Tutti is a free tool that analyzes a YouTube link or audio/video file to detect the key, tempo (BPM), time signature and chord progression, then builds guitar chord charts and TAB. Results are shown with a playback cursor so you can play along.
A chord progression lists the chords in the order they change. At each chord name (e.g. G, Em, C), fret that chord and strum in time.
Guitar chord chart for BTS (방탄소년단) '봄날 (Spring Day)' Official MV. Tutti analyzed the YouTube audio to extract key G# Major, 107 BPM. a progression of 15 chords. Check the progression, each chord's notes and practice tips, then play along with the cursor in the Tutti app.
“BTS (방탄소년단) '봄날 (Spring Day)' Official MV” runs at 107 BPM in 4/4, in G# Major. The chart spans 143 bars and uses 15 distinct chords, changing roughly every 2.9 seconds.
Part A, the most repeated section, loops G# → G# → D# → D# → D# — I–V in scale degrees.
13 of the chords need a barre (A#, A#7, Cm, D#, D#7, Fm, G#, G#m, G#m6, G#maj7, G#sus2, Gm, Gm7), so this sits at a upper-int. level.
With a capo on fret 3 you can play it with G · G7 · A · Am · C · C7 … shapes instead — 12 of 15 become open chords.
Start around 75 BPM with a metronome and work up to 107.
Tempo drifts by about ±9.8 BPM — steady enough to practise to a click.
Dynamic range is 46 dB — a wide swing, with 10% of the song played quietly.
Balance of the mix: Bass 28%, Vocals 25%, Drums 24%.
The vocal sits between D♯2 and G♯5 (centred on D♯4), which helps if you are picking a key to sing in.
| Part | Starts | Bars | Plays | Progression |
|---|---|---|---|---|
| Part A | 0:00 | 1–4 | 1 | F → C → C → C → C |
| Part B | 0:33 | 5–8 | 1 | |
| Part C | 0:42 | 9–12 | 1 | |
| Part D | 0:51 | 13–16 | 1 | D# → D# → D# |
| Part E | 1:00 | 17–24 | 6 | Cm → G# → D# → Gm → Cm → G# → D# → D#7 |
| Part F | 1:17 | 25–28 | 1 | Cm → G# → G# → D# → D#7 → D# → Gm |
| Part E | 1:26 | 29–40 | 6 | Cm → G# → G# → D# → Gm → Cm → G# → D# |
| Part G | 1:53 | 41–44 | 2 | Cm → G# → G# → D# → D# |
| Part H ★ | 2:02 | 45–48 | 9 | G# → G# → D# → D# → D# |
| Part I | 2:11 | 49–52 | 4 | G# → G# → Cm → Cm → D# |
| Part H ★ | 2:20 | 53–56 | 9 | G# → G# → D# → D# → D# |
| Part J | 2:29 | 57–60 | 2 | G# → G# → G#m → Cm → Cm → D# |
★ most repeated — likely the chorus
The Roman numeral on each chord shows its function relative to the key, revealing the harmonic flow.
