Chords of: Open Your Textbook by: LEE SEUNG YOON. (A7, E, Bm7, Cmaj7) 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.
“Open Your Textbook” by LEE SEUNG YOON is in C Major and runs at about 142 BPM, giving it a fast, energetic pace. Our analysis found 25 different chords across 165 chord changes; the ones that carry the song are A7, E, Bm7, Cmaj7.
E is the chord you will hold longest — roughly 24% of the 4:44 the chords were tracked for. The song opens with E → D6 → E → C6 → A → E → Bm7 → E. Play the timeline above to hear each change land in real time.
Difficulty: intermediate — 4 main chords including 3 extended or barre voicings. Guitarists can play it as written — C Major sits in open-chord territory, no capo needed.
| Chord | Time held | Share |
|---|---|---|
| E | 1:09 | 24% |
| Bm7 | 0:58 | 21% |
| Cmaj7 | 0:49 | 17% |
| A | 0:37 | 13% |
| A7 | 0:09 | 3% |
| D | 0:08 | 3% |
| D6 | 0:08 | 3% |
| C | 0:07 | 2% |
E – Am – Em – D6 – E – C6 – Bm7 – Gmaj7 – A – E – Am – Cmaj7 – Bm7 – Amaj7 – E – Am – Cmaj7 – Bm7 – Am7 – E – C6 – Bm7 – Amaj7 – E – Cmaj7 – Bm7 – A – Cmaj7 – Bm7 – E – E7 – D6 – E – D6 – Cmaj7 – Bm7 – G/B – D – A – E – Cmaj7 – Bm7 – A – E – Cmaj7 – Bm7 – A7 – E – …
