Make some noise for KBlocks! Katy Perry calls her a STAR and waves around her fur wrap after KBlocks covers 'Valerie' and gets the Idol Arena crowd all revved up! KBlocks suffered a lot of turmoil in her life after her church-singing father died, but she chooses to smile and embody what it might be like if he was still on stage with her. Watch Sunday at 8/7c on ABC. Stream on Hulu.