Panic! At The Disco, the Las Vegas based band who had a thing for ridiculously long song names like “The Only Difference Between Martyrdom and Suicide Is Press Coverage,” broke out in 2005 with “I Write Sins Not Tragedies.” They have released four studio albums since then, are still going strong touring, and, we just discovered, have a big fan by the name of Chance The Rapper.

At a gig in Riverside, California on Saturday night (March 7), Chance and some of his friends jumped onstage during the band’s final song, and it’s clear that Chance knows all the words to “I Write Sins Not Tragedies.” Watch the footage above.

2015 is going to be massive for Chance The Rapper.