To learn Radwimps - Tremolo chords, your first step should be understanding these chords - Em, C, F, C, G, F, G, C, Em, G and F in sequence. A good strategy is to initiate at 49 BPM and then accelerate to the track's regular speed of 98 BPM. With an eye on the song's key C Major, set the capo that best suits your vocal range.