To learn Sumika - Negai chords, your first step should be understanding these chords - Em, D, G, F#m, F, A, D, G, F#, Bm and D in sequence. To master the tempo, it's wise to start at 45 BPM before aiming for the song's 91 BPM. With D Minor as the song's key, tweak the capo to cater to your vocal pitch and chord likes.