To learn Radwimps - Sasakure chords, focus on the sequence of these chords: A, C#, F#m, D, A, F#m, C# and D. To master the tempo, it's wise to start at 42 BPM before aiming for the song's 85 BPM. Fine-tune the capo based on your vocal range, ensuring it complements the key of A Major.