By People Staff
Updated April 20, 2010 12:00 AM
Credit: Kevin Clark

Glee star Cory Monteith says he was so shocked at being cast in FOX’s hit musical show that he at first he thought the decision was made in error.

“When they picked me for the part, I thought they were mistaken,” he tells Entertainment Tonight for an interview to air Tuesday. “I thought I was going to be swiftly recast and fired and deported back to Canada!”

In the audition, he jokes, he chose a rather unusual instrument on which to demonstrate his musical talent.

“Originally I played the Tupperware drums to show my musical abilities, but I had to ultimately sing for the final audition, so I had to figure out how to do that very last minute,” says Monteith, 27. “I never did sing growing up, so it’s a change for me. I sang in the car, in the shower, but never for anyone. That’s scary.”

PHOTOS: Cory Monteith’s Hollywood Life

Now that Montheith’s more comfortable belting out show tunes on Glee, he doesn’t want to stop there.

Says Monteith: “I want to sing at costar Jane Lynch‘s wedding.” –Catherine Donaldson-Evans

Courtesy Cory Monteith