To jam and learn Rhoma Irama - Judi chords, your primary focus should be mastering these chords sequence: Dm, C, Dm, Bb, C, Dm and Am. I suggest starting at a calm pace of 74 BPM, and as you gain confidence, approach the song's BPM of 148. With an eye on the song's key Gb Major, set the capo that best suits your vocal range.