To learn Gal Costa - Bem-Bom chords, your first step should be understanding these chords - Fm, Gb, Bm, G, C, Fm, Gb, G, Abm, Gb, C and G in sequence. To build a solid grasp, start slowly at 57 BPM and then match the original tempo of 114 BPM. Adjust the capo based on your vocal range and chord preference, keeping the song's key of Db Major in mind.