To jam and learn Niska - Medellín chords, your primary focus should be mastering these chords sequence: C, Am, Dm, D, Am, Dm, Am and D. I suggest starting at a calm pace of 64 BPM, and as you gain confidence, approach the song's BPM of 129. With the song's key of D Minor, set your capo to fit your vocal range and chord choice.