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 CORTIS (코르티스) 'TNT' Official MV. Tutti analyzed the YouTube audio to extract key E Minor, 71 BPM. a progression of 12 chords. Check the progression, each chord's notes and practice tips, then play along with the cursor in the Tutti app.
“CORTIS (코르티스) 'TNT' Official MV” runs at 71 BPM in 4/4, in E Minor. The chart spans 55 bars and uses 12 distinct chords, changing roughly every 1.7 seconds.
Part A, the most repeated section, loops B → E — v–i in scale degrees.
5 of the chords need a barre (A6, B, Bm, Bm7, Fm), so this sits at a advanced level.
With a capo on fret 7 you can play it with D6 · Dm7 · E · E7 · Em · Em7 … shapes instead — 10 of 12 become open chords.
Start around 50 BPM with a metronome and work up to 71.
Tempo drifts by about ±9.9 BPM — steady enough to practise to a click.
Dynamic range is 22 dB — a moderate swing between soft and loud passages.
Balance of the mix: Bass 51%, Vocals 20%, Drums 18%.
The vocal sits between C2 and A♯5 (centred on C♯4), which helps if you are picking a key to sing in.
| Part | Starts | Bars | Plays | Progression |
|---|---|---|---|---|
| Part A ★ | 0:00 | 1–4 | 4 | B → E → B → E → B → E → B → E |
| Part B | 0:13 | 5–8 | 1 | B → E7 → B → E → B7 → E7 → B7 → E7 |
| Part C | 0:27 | 9–12 | 2 | B7 → E7 → B7 → B7 → Em7 → B7 → Am7 |
| Part D | 0:40 | 13–16 | 1 | B7 → Em7 → B7 → Em7 → B7 → E7 → Bm → E7 |
| Part E | 0:54 | 17–20 | 1 | Bm → E7 → Bm → Bm7 → E7 → Em → Bm → E |
| Part F | 1:07 | 21–24 | 1 | Bm → E7 → Bm → B → B7 → E7 → B7 → E7 |
| Part G | 1:21 | 25–28 | 1 | B7 → E7 → B7 → E7 → B7 → Em → Bm → A6 |
| Part H | 1:34 | 29–32 | 2 | Bm → Em → Bm → Bm7 → E7 → Bm7 → E7 |
| Part A ★ | 1:48 | 33–44 | 4 | B7 → E7 → B → E → B → E → B → E |
| Part C | 2:27 | 45–48 | 2 | B7 → Bm7 → B7 → E → B7 → B7 → Em7 |
| Part H | 2:41 | 49–52 | 2 | Bm7 → A6 → Bm7 → Em7 → Bm7 → Bm7 → E7 |
★ most repeated — likely the chorus
The Roman numeral on each chord shows its function relative to the key, revealing the harmonic flow.
