To jam and learn Jaill - Regen chords, your primary focus should be mastering these chords sequence: Am, Em, Am, C, Am, C, E, A, Am, G, Em, Am, A and Em. For best results, commence at 43 BPM and progress to the song's BPM of 87. Align the capo with your vocal depth and chord choice, bearing in mind the song's original key: C Major.