To learn 李克勤 - 如果一天 chords, your first step should be understanding these chords - E, C#m, D, C#, F#m, G, Bm, C#, F#m, F# and D in sequence. For best results, commence at 74 BPM and progress to the song's BPM of 148. Adjust the capo based on your vocal range and chord preference, keeping the song's key of F# Minor in mind.