To jam and learn the simple chords for 杜歌 - 兄弟難當 chords, practice playing G, F#m, B, A, B, G, A, Bm and G in sequence. Set your pace at 49 BPM initially and then sync up with the song's BPM of 98. Considering the song's key of B Minor, position your capo to suit your vocal and chord preferences.