To learn Radwimps - カイコ chords, grasp the musical fabric of the song with this sequence - F#m, E, F#m, A, E, A, E, G, Am, F and C of chords. Start with a comfortable 68 BPM and as you become proficient, aim for the song's BPM of 136. To match your vocal range and chord inclination, adjust the capo in line with the key: A Major.