Chords of: The 30th by: Billie Eilish. (Em, G, C, Cm) 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.
“The 30th” by Billie Eilish is in C Major and runs at about 140 BPM, giving it a fast, energetic pace. Our analysis found 23 different chords across 105 chord changes; the ones that carry the song are Em, G, C, Cm.
Em is the chord you will hold longest — roughly 20% of the 3:31 the chords were tracked for. The song opens with G → Em → Am7 → Gmaj7 → D → Gmaj7 → Em → Am7. Play the timeline above to hear each change land in real time.
Difficulty: advanced — 9 main chords with 5 extended, altered or slash voicings. Guitarists can play it as written — C Major sits in open-chord territory, no capo needed.
| Chord | Time held | Share |
|---|---|---|
| Em | 0:43 | 20% |
| G | 0:40 | 19% |
| C | 0:19 | 9% |
| Cm | 0:14 | 7% |
| Cmaj7 | 0:13 | 6% |
| Am | 0:12 | 6% |
| Gmaj7 | 0:12 | 5% |
| Am7 | 0:11 | 5% |
G – Gmaj7 – C – Em – D6 – Am7 – Gmaj7 – D – C/D – Gmaj7 – Em – Am7 – G – D – C/D – Gmaj7 – Bm – Em – D6 – Am7 – G – C/D – G/D – C/D – D6 – Em – G/D – C – Cm6 – G – Em – C – G – Em – C – Em – G – Cmaj7 – Em – Am – Cm – G – Bm – Em – Am7 – G – D7 – G/D – …
