Let's start jamming Radwimps - カイコ chords, Practice these chords sequence - F#m, E, F#m, A, E, A, E, G, Am, F and C. To build a solid grasp, start slowly at 68 BPM and then match the original tempo of 136 BPM. Adjust the capo based on your vocal range and chord preference, keeping the song's key of A Major in mind.