To start learning Mamamoo - 우리끼리 chords, centre your learning around these elemetal chords sequence: F#, Bm, Em, F#, Bm, F#, C#m and Em. A good strategy is to initiate at 60 BPM and then accelerate to the track's regular speed of 120 BPM. Fine-tune the capo based on your vocal range, ensuring it complements the key of D Major.