Let's start jamming 무한궤도 - 여름 이야기 chords, familiarize yourself with these chords - D, G, A, D, G and D in sequence. A strategic approach would be to train at 45 BPM initially, and then accelerate to the song's tempo of 90. Set the capo considering your vocal range and favored chords, aligned with the key: C# Major.