To learn Un Corazón - Salmo 23 Feat. Marco Barrientos chords, these are the chords to practise in sequence: Em, Am, F, C, G and Am. For a smooth transition, initiate your practice at 43 BPM and gradually match the song's pace of 87 BPM. Align the capo with your vocal depth and chord choice, bearing in mind the song's original key: C Major.