Billy Joel signs off on Glee episode

From Access Hollywood:

Matthew Morrison and Neil Patrick Harris dueted to Billy Joel’s “Piano Man” on “Glee” last season, and Billy told Access Hollywood’s Shaun Robinson that more of his illustrious catalog might make it to McKinley High.

“Have you ever seen ‘Glee’?” Shaun asked.

“Yeah,” Billy confirmed.

“Would you sign off on a ‘Glee’ episode of Billy Joel?” she continued.

“I already have,” Billy confirmed, breaking news about the hit FOX show.

Source Access Hollywood