To learn Beyond - 灰色的心 chords, begin by getting comfortable with these sequence: Bm, F#m, D, E, B, E, Bm and D. I suggest starting at a calm pace of 80 BPM, and as you gain confidence, approach the song's BPM of 160. To match your vocal range and chord inclination, adjust the capo in line with the key: A Major.