Sam Woolf hasn't had the easiest upbringing, but his "agent" grandfather has supported him. He plays Ed Sheeran songs to retired people in Florida, but after a performance of "Lego House" for the judges, you could tell that Sam will have a lot of appeal with the young crowd too. Keith commented, "Good lord, your pitch is incredible...I've never heard 'Lego House' done so fast, like an auction song." Harry joked about this teen having a treble clef tattoo, but the three judges loved him and he's off to Hollywood. Here comes treble! "My daughters are going to go absolutely crazy for that kid," remarked Harry. Keep that adorable, supportive, crying grandpa around, Sam! That will help garner a lot of votes.