To learn Harris Jayaraj, R.Prasanna, Hariharan, Mahathi - (Original Motion Picture Soundtrack) Mudhal Mazhai chords, grasp the musical fabric of the song with this sequence - Fm, Ab, Fm, Db, Ab, Db, Eb and Ab of chords. Begin your practice at a relaxed 61 BPM, then work your way up to the song's BPM of 123. With Ab Major as the song's key, tweak the capo to cater to your vocal pitch and chord likes.