To learn 周杰倫 - 威廉古堡 chords, begin by getting comfortable with these sequence: C#, F#, Em, Bm, C#, F# and Bm. Ease into the song by practicing at 34 BPM before reaching the track's full tempo of 70 BPM. Considering your vocal pitch and chord choices, adjust the capo in accordance with the key: G Major.