Morgan Crowley is an Irish singer and a good friend of The Wiggles . He guest starred in Yule Be Wiggling singing Curoo Curoo with The Wiggles and Jingle Bells with Captain Feathersword. He also appears in Hoop-Dee-Doo: It's a Wiggly Party singing Zoological Gardens with The Wiggles and the Go Bananas! CD where he's singing The Unicorn. More recently, he did the voice of Washington the Elf in Dorothy the Dinosaur Meets Santa Claus. His Christmas CD is avaliable from The Wiggles Shop, which features Curoo Curoo as well as many other Christmas classics. Morgan also became Greg's fill-in for the Wiggles' concerts in Ireland.