To start learning Subrosa - Cosey Mo chords, build your understanding on these basic chords - Bb, C, Eb, Gm, C, Bb, G and Gm in sequence. A strategic approach would be to train at 45 BPM initially, and then accelerate to the song's tempo of 90. With an eye on the song's key G Minor, set the capo that best suits your vocal range.