File:Ally finds Chuck singing her song.jpg

After Ally's songbook is stolen at the 70's disco party at Marino High, a librarian describes the possible thief as somebody in a blonde afro wig with a white disco suit. The trouble is, that description fits three people, and one of them is Chuck, who happens to be singing what he doesn't know is one of her songs from that album, in the episode "Mysteries & Meddling Kids." Swiped from my iTunes copy.