Chords of: 123-78 (Live) by: BOYNEXTDOOR. (A7, C#, Bbm, Bbm7) 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.
“123-78 (Live)” by BOYNEXTDOOR is in Bb Minor and runs at about 137 BPM, giving it an upbeat, driving pulse. Our analysis found 47 different chords across 131 chord changes; the ones that carry the song are A7, C#, Bbm, Bbm7.
C# is the chord you will hold longest — roughly 11% of the 3:12 the chords were tracked for. The song opens with C#maj7 → Bbm7 → Ebm7 → Bbm7 → Eb7 → Fm7 → Bbaug → Ab6. Play the timeline above to hear each change land in real time.
Difficulty: advanced — 8 main chords with 10 extended, altered or slash voicings. Guitar tip: put a capo on fret 1 and use A minor shapes — the song stays in Bb Minor but every chord becomes an open chord.
| Chord | Time held | Share |
|---|---|---|
| C# | 0:21 | 11% |
| Bbm | 0:16 | 8% |
| Bbm7 | 0:15 | 8% |
| F7 | 0:14 | 7% |
| C#6 | 0:11 | 5% |
| C#maj7 | 0:10 | 5% |
| Ab6 | 0:09 | 5% |
| F#6 | 0:09 | 5% |
C#maj7 – Bbm7 – Ebm7 – Fm – Ab – C#maj7 – Bbm7 – Eb7 – F#/G# – Ebm – Fm7 – Bbaug – Ebm6 – Ebm7 – Ab6 – Fm – Em6 – Eb/Bb – Ebm7 – D7 – C#maj7 – F7 – F#maj7 – F#6 – Ab6 – C# – F7 – F#6 – C#6 – C#maj7 – F#6 – Ab6 – C#6 – C#maj7 – F7 – F#maj7 – Fm – Bbm – Ebm – Bbm – Ab – Bbm7 – Ab – C#/G# – Eb – Eb7/G – Ab/Bb – C#6 – …
