It was later found out that the nod did not come from Madonna directly, reports The Daily Express. "Madonna doesn't have a TV and has no idea what Glee is. The show producers did ask her if she wanted to make an appearance in the much-hyped Madonna episode," a source told popeater.com.
“She said, 'No thanks', and to be honest she would rather sing an Elton John song than butcher one of hers," the source added.
London (ANI): Madonna turned down an offer to do a cameo in an episode of Glee – a show dedicated to the Queen of Pop – because she had never heard about the show. Producers of the show were excited when they got the permission from the singer"s team to use her back catalogue in one of their episodes.