To learn Louis Tomlinson - Walls chords, your first step should be understanding these chords - F#, B, E, G#m, F#, E, G#m and B in sequence. Kick off your practice at a gentle 44 BPM, then escalate to the song's tempo of 89 BPM. Tune your capo to accommodate your vocal range, referencing the song's key: B Major.