Learn the basic chords of Ps. Alwin Thomas - Appa Unga Naamathil chords, with this master sequence: Am, Dm, C, Dm, Gm, F and C. For best results, commence at 70 BPM and progress to the song's BPM of 140. With C Major as the song's key, tweak the capo to cater to your vocal pitch and chord likes.
