To jam and learn Ub40 - King chords, your primary focus should be mastering these chords sequence: C, Dm, C, G, F, C, Dm, G, Dm, G, F and G. Set your pace at 68 BPM initially and then sync up with the song's BPM of 136. With Ab Major as the song's key, tweak the capo to cater to your vocal pitch and chord likes.