CORTIS (코르티스) 'ACAI' Official MV guitar chords
Auto-generated chord chart from YouTube analysis
About Tutti
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) 'ACAI' Official MV. Tutti analyzed the YouTube audio to extract key A# Major, 150 BPM. a progression of 16 chords. Check the progression, each chord's notes and practice tips, then play along with the cursor in the Tutti app.
Song notes
“CORTIS (코르티스) 'ACAI' Official MV” runs at 150 BPM in 4/4, in A# Major. The chart spans 112 bars and uses 16 distinct chords, changing roughly every 1.7 seconds.
Part A, the most repeated section, loops A#sus2 → Fm7 → G#6 → A#7 → A#sus2 → A#sus2 → A#sus2 → A#sus2 — I–V–?–I–I in scale degrees.
15 of the chords need a barre (A#, A#7, A#m, A#m7, A#sus2, Cm, Cm7, D#, D#m, Edim, F7, Fm, Fm7, G#, G#6), so this sits at a advanced level.
With a capo on fret 1 you can play it with A · A7 · Am · Am7 · Asus2 · B … shapes instead — 10 of 16 become open chords.
Start around 105 BPM with a metronome and work up to 150.
Tempo swings by ±25.1 BPM, so follow the recording rather than a metronome.
Dynamic range is 51 dB — a wide swing, with 15% of the song played quietly.
Balance of the mix: Bass 48%, Drums 30%, Vocals 19%.
The vocal sits between C2 and F5 (centred on G♯3), which helps if you are picking a key to sing in.
Song structure
| Part | Starts | Bars | Plays | Progression |
|---|---|---|---|---|
| Part A | 0:00 | 1–8 | 1 | F7 → A#m7 → A#m7 → Cm7 → D#m → A#m7 → A#m7 → Cm7 |
| Part B | 0:22 | 9–16 | 2 | A#m → Fm → A#m7 → A#m7 → Fm → A#m → A#m → Fm |
| Part C ★ | 0:35 | 17–24 | 5 | A#sus2 → Fm7 → G#6 → A#7 → A#sus2 → A#sus2 → A#sus2 → A#sus2 |
| Part B | 0:49 | 25–32 | 2 | A#sus2 → A#7 → A#sus2 → A#sus2 → A#sus2 → A#m → Fm → A#sus2 |
| Part D | 1:02 | 33–40 | 1 | A#m7 → A#7 → A#7 → F7 → A#7 → A#7 → F7 → A#7 |
| Part C ★ | 1:13 | 41–48 | 5 | A#7 → A#7 → A#7 → A#7 → A#7 → A#7 → Fm7 → A#7 |
| Part E | 1:26 | 49–56 | 3 | A#7 → A#7 → Fm7 → A#7 → A#7 → Fm → Fm → A#7 |
| Part F | 1:39 | 57–64 | 1 | A#7 → A#7 → F7 → A# → A#7 → A# → A# → F7 |
| Part E | 1:52 | 65–72 | 3 | Fm → Fm → Fm7 → A#7 → A#7 → A#sus2 → A#sus2 → Fm7 |
| Part C ★ | 2:02 | 73–96 | 5 | A#sus2 → A#m7 → Fm → Fm7 → A#sus2 → A#sus2 → Fm7 → A#7 |
| Part E | 2:36 | 97–104 | 3 | A#7 → Fm → Fm7 → A#7 → A#7 → Fm7 → A#7 → A#7 |
| Part G | 2:49 | 105–112 | 1 | A#7 → F7 → A#7 → A#7 → A#7 → D# → Edim → Edim |
★ most repeated — likely the chorus
Practice tips
- At about 150 BPM it's fast — start slow and build up speed.
- 16 chords are used. Loop the sections where chords change quickly.
- This song is in A# Major; practicing other songs in the same key builds your chord sense.
Chords used & their notes (fingering reference)
The Roman numeral on each chord shows its function relative to the key, revealing the harmonic flow.
Chord progression
