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 Red Velvet 레드벨벳 'Surfin' Boy' MV. Tutti analyzed the YouTube audio to extract key B Minor, 103 BPM. a progression of 26 chords. Check the progression, each chord's notes and practice tips, then play along with the cursor in the Tutti app.
“Red Velvet 레드벨벳 'Surfin' Boy' MV” runs at 103 BPM in 4/4, in B Minor. The chart spans 72 bars and uses 26 distinct chords, changing roughly every 1.6 seconds.
16 of the chords need a barre (A#, A#6, A#7, A#m7, A#maj7, Asus2, Bm, Bm7, C#m, Cm, D#m7, F#, F#m, G#, G#6, Gm7), so this sits at a advanced level.
With a capo on fret 2 you can play it with G · G# · G#6 · G#7 · G#m7 · G#maj7 … shapes instead — 11 of 26 become open chords.
Start around 72 BPM with a metronome and work up to 103.
Tempo swings by ±17.2 BPM, so follow the recording rather than a metronome.
Dynamic range is 22 dB — a moderate swing between soft and loud passages.
The first chord lands at 2s, so there is a short intro before you come in.
Balance of the mix: Vocals 31%, Drums 25%, Bass 24%.
The vocal sits between G3 and E5 (centred on G4), which helps if you are picking a key to sing in.
The Roman numeral on each chord shows its function relative to the key, revealing the harmonic flow.