To learn 余天 - 舞台 chords, your first step should be understanding these chords - Bm, C, D, G, Am, D, Ab, C, G, E and Am in sequence. I suggest starting at a calm pace of 41 BPM, and as you gain confidence, approach the song's BPM of 82. Adapt the capo setting considering your vocal range, with reference to the key: G Major.