Music·Posted on Apr 14, 2013R. Kelly Sang With Phoenix At Coachella And It Was AmazingThey mashed up "1901" and "Ignition Remix"! No, really!by Matthew PerpetuaBuzzFeed StaffLinkFacebookPinterestTwitterMail Experience the magic! View this video on YouTube youtube.com Here's a nice clear shot of R. Kelly and Phoenix singer Thomas Mars on stage. And here's a shot from Kells' Instagram of him celebrating backstage with the rest of the Phoenix dudes.