To jam and learn the simple chords for 渣泥 - 半心 chords, practice playing B, Gb, Ab, Bb, Ebm, B, Ab, B and Ebm in sequence. Set your pace at 52 BPM initially and then sync up with the song's BPM of 104. Considering your vocal pitch and chord choices, adjust the capo in accordance with the key: B Major.