To jam and learn 張國榮 - 大熱 chords, your primary focus should be mastering these chords sequence: Cm, D, Gm, Cm, G and Gm. I suggest starting at a calm pace of 80 BPM, and as you gain confidence, approach the song's BPM of 160. Fine-tune the capo based on your vocal range, ensuring it complements the key of G Minor.