Usher was in good company during his show-stopping Super Bowl halftime show on Sunday.

While the Superstar singer was clearly the main event, he had support from some of the biggest names in music during the NFL championship game , which was held at Allegiant Stadium in Las Vegas.

Ushers stellar 13-minute set featured Alicia Keys, who simply sizzled on stage in a sparkling red jumpsuit by Dolce & Gabbana.

She started on piano for a rendition of If I Aint Got You before the pair soared into a sultry duet of My Boo, during which the singers exchanged flirtatious glances and danced oh-so-close.

Though their chemistry seemed next level, both Usher and Keys are spoken for.

On Thursday, the Good Good singer obtained a marriage license with girlfriend Jennifer Goicoechea. Keys has been married to rapper Swizz Beatz since 2010.

However, Keys wasnt the only major guest during Ushers performance.

Joining the artist for an amped-up version of U Got It Bad was H.E.R., who shredded on guitar.