Hozier joined pop legend Annie Lennox at the 2015 Grammy Awards to perform a mashup of his breakthrough track "Take Me to Church" and the 1956 classic "I Put a Spell On You" from Screamin' Jay Hawkins, a song the former Eurythmics singer covered on her 2014 album Nostalgia.
After Hozier played the first few verses of "Take Me to Church" solo, Lennox entered and lent her bluesy contralto to the newcomer's folk-rock hit. But the real gift was when they segued into "I Put a Spell On You." Lennox went a little wild, mimicking a harmonica with her cupped hands and mouth.
But even if that air harmonica was a little lol-worthy, smiles turned into dropped jaws when she started scatting toward the end. It was killer, and the audience understandably gave them a standing ovation. Watch it below.