Chords of: Fireflies by: John Legend, Pharrell Williams. (Bm, Em, F#, Bm7) 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.
“Fireflies” by John Legend, Pharrell Williams is in E Minor and runs at about 117 BPM, giving it an upbeat, driving pulse. Our analysis found 19 different chords across 48 chord changes; the ones that carry the song are Bm, Em, F#, Bm7.
Bm is the chord you will hold longest — roughly 31% of the 2:55 the chords were tracked for. The song opens with Bm → G → Em → F# → Em → Bm → Em → Bm. Play the timeline above to hear each change land in real time.
Difficulty: advanced — 6 main chords with 5 extended, altered or slash voicings. Guitarists can play it as written — E Minor sits in open-chord territory, no capo needed.
| Chord | Time held | Share |
|---|---|---|
| Bm | 0:54 | 31% |
| Em | 0:30 | 17% |
| F# | 0:20 | 12% |
| Bm7 | 0:15 | 9% |
| Em7 | 0:09 | 5% |
| D | 0:08 | 5% |
| F#m7 | 0:06 | 3% |
| Cmaj7 | 0:06 | 3% |
Bm – F#m7 – G – Em – F# – Em – Bm – Em – Bm – F# – Bm – F#m – G – Em – Em6 – E6 – F# – Em – Bm – Em – Bm – F# – Bm – F#m7 – Gmaj7/F# – Em7 – F# – F#7 – D – Cmaj7 – Bm7 – A# – C – D – C6 – Bm7 – A#maj7 – Cmaj7 – Bm7 – F#m7 – Em7 – F# – Em – Bm – Em – Bm – F# – B
