To learn 張國榮 - (Live in Hong Kong / 1989-1990) 當年情 chords, focus on the sequence of these chords: Ab, Db, G, Cm, Ab, Fm and G. Start with a comfortable 74 BPM and as you become proficient, aim for the song's BPM of 149. Set the capo considering your vocal range and favored chords, aligned with the key: C Minor.