To learn 譚詠麟 - 傾我今生 chords, your first step should be understanding these chords - Gm, Eb, F, Bb, D, Gm, F and Gm in sequence. Start with a comfortable 58 BPM and as you become proficient, aim for the song's BPM of 116. With G Minor as the song's key, tweak the capo to cater to your vocal pitch and chord likes.