Let's start jamming Avicii - Sos chords, practice the chord sequence G#, Fm, Cm, C#, Fm, D#, Fm, C# and G#. To master the tempo, it's wise to start at 50 BPM before aiming for the song's 100 BPM. To match your vocal range and chord inclination, adjust the capo in line with the key: G# Major.