Chords of: Blackbox Life Recorder 21f by: Aphex Twin. (Bb, B, Bbm, Bmaj7) are the main chords of the song. The chords are displayed instantly in real-time with a YouTube player, four synced views, instrument diagrams, loop practice and a built-in vocal-remover mixer.
“Blackbox Life Recorder 21f” by Aphex Twin is in B Major and runs at about 134 BPM, giving it an upbeat, driving pulse. Our analysis found 28 different chords across 110 chord changes; the ones that carry the song are Bb, B, Bbm, Bmaj7.
B is the chord you will hold longest — roughly 23% of the 4:12 the chords were tracked for. The song opens with Bbm → Baug → Bbm → Bmaj7 → F#maj7 → B → Bbm → Bmaj7. Play the timeline above to hear each change land in real time.
Difficulty: advanced — 8 main chords with 12 extended, altered or slash voicings. Guitar tip: put a capo on fret 2 and use A major shapes — the song stays in B Major but every chord becomes an open chord.
| Chord | Time held | Share |
|---|---|---|
| B | 0:57 | 23% |
| Bbm | 0:47 | 19% |
| Bmaj7 | 0:30 | 12% |
| Ebm | 0:23 | 9% |
| C#7 | 0:14 | 6% |
| F#maj7 | 0:13 | 5% |
| Baug | 0:12 | 5% |
| B6 | 0:11 | 4% |
Bbm – Baug – C#m7b5/B – Bbm – Bmaj7 – F#maj7 – B – C#m7b5/B – Bbm – Bmaj7 – F#maj7 – B – C#7 – Bbm – Bmaj7 – Bbm – B – C#m7b5/B – Bbm – B – Bmaj7 – Bbm – B – C#7 – Bbm – Bmaj7 – Bbm – B – Fm7b5 – Ebm7 – Bbm – Bmaj7 – C#7 – F# – Eb7 – Bbm – C#7 – Bmaj7 – F#maj7 – G7 – B – Bb6 – C# – F#maj7 – Gm7b5 – B – C#6 – Bmaj7 – …
