Let's start jamming Fourtwnty - Aku Tenang chords, practice the chord sequence C#m, B, C#, G#, E, F#, G#m, B, E and G#m. Start with a comfortable 57 BPM and as you become proficient, aim for the song's BPM of 115. Adapt the capo setting considering your vocal range, with reference to the key: B Major.