To start learning 許志安 - (Live) 朋友二號 chords, delve into these chords sequence to get the song's feel: Abm, Gb, Abm, Gb, E, Gb, B and Gb. Start with a comfortable 76 BPM and as you become proficient, aim for the song's BPM of 152. Tune your capo to accommodate your vocal range, referencing the song's key: B Major.