Christina Perri performs on Jay Leno show tonight

Christina Perri has just announced that she’ll be performing on Jay Leno’s Tonight Show tonight (apparently a late addition, as television listings show Stone Temple Pilots as the musical guest). The singer rose out of obscurity literally overnight when a demo of her song “Jar of Hearts” was used on So You Think You Can Dance earlier this summer; she since returned to that show to perform the song live. Perri recently signed a major label record deal with Atlantic Records, with as of yet not publicly stated plans for a release date for her debut album. Other guests listed for the Tonight Show tonight are Jennifer Aniston and Jason Schwartzman. We’re still not sure what the story is with Stone Temple Pilots, but Christina Perri has offered photographic proof that she’s really going to be on the show. NBC.com also now lists Perri as the musical guest.