To start learning 古井戸 - (LIVE Ver.) ポスターカラー chords, delve into these chords sequence to get the song's feel: Bm, A, Bm, A, D, Em, Bm, G, Em and A. I suggest starting at a calm pace of 36 BPM, and as you gain confidence, approach the song's BPM of 72. Considering the song's key of D Major, position your capo to suit your vocal and chord preferences.