Kesha will front Dave Navarro and Duff MCKagan's supergroup for an upcoming cancer benefit. The Tik Tok singer will appear with The Hellcat Saints for the one-off performance at the El Rey Theatre in Los Angeles to benefit the Rhonda's Kiss organisation. Actress/rocker Juliette Lewis, MCKagan's former Guns N' Roses bandmate Gilby Clarke and Nine Inch Nails drummer Josh Freese will also take the stage.