There were a few unlikely pairings at the Coachella music festival this past weekend.

The XX teamed up with Solange Knowles to cover Aaliyah's "Hot Like Fire." (Video above.)

Grammy-winning French indie rock band Phoenix brought R&B singer R. Kelly as their special guest on stage. He joined Phoenix for a mash-up of his hit single "Ignition" with Phoenix's hit "1901".

Earl Sweatshirt was also joined by Flying Lotus and Tyler, the Creator on stage Friday.