Listen to the hot and popular song "Unholy" by Sam Smith and Kim Petras. It is a bold, electrifying track that blends dark pop about secrecy and betrayal.

Check out PEOPLE's full Grammys coverage to get the latest news on music's biggest night. Petras and Smith's show-stopping, "Unholy"-inspired look is just the first taste fans will get of the duo ...

In his current role, Jack covers daily music news and has interviewed both ... to introduce Sam Smith and Kim Petras' performance of "Unholy," which won for best pop duo/group performance earlier ...