To learn Sky - Troika chords, grasp the musical fabric of the song with this sequence - Am, Gm, D, B, Gb, B, Eb, Bb and Eb of chords. A strategic approach would be to train at 64 BPM initially, and then accelerate to the song's tempo of 130. Adjust the capo based on your vocal range and chord preference, keeping the song's key of D Minor in mind.