To learn じん - (自然の敵P) カゲロウデイズ chords, your first step should be understanding these chords - Bm, A, Bm, A, C#, F#m, Em, A, F#m and A in sequence. A good strategy is to initiate at 50 BPM and then accelerate to the track's regular speed of 100 BPM. Align the capo with your vocal depth and chord choice, bearing in mind the song's original key: A Major.