A clip from his show in Adelaide, Australia shows him turning the upbeat pop tune into a soulful, acoustic affair, one that's perfect for any melancholy moments you may be experiencing. Mayer clearly knows the tune well, and even manages to play with the tempo a bit. It's worth watching just to hear him enunciate "XO" over and over before ripping through a harmonica solo.
Mayer is currently touring down under before hitting Japan and Korea next month. His latest release is 2013's Paradise Valley.