(Cover) - EN Showbiz - John Stamos was mortified when his vocal exercise tape began playing during an intimate tryst.

The 47-year-old American actor has been promoting his upcoming appearance in musical Hairspray at the Hollywood Bowl, where he stars as Corny Collins.

In an appearance on Wednesday's edition of Jimmy Kimmel Live the star, who plays Dr. Carl Howell on musical show Glee, explained how he constantly strives to improve his singing. However, his dedication landed him in a rather embarrassing situation.

"I have to really work very hard on it, like Glee they would lather my vocals in auto-tune," he laughed.

"I'm in New York on a date, second base, I'm rounding third or I'm coming home. And I got the iPod on shuffle, Adele, romantic Barry White, so then my exercises come on, Open your mouth wide, stick your tongue all the way out.' She said, If you don't know this I'm with the wrong guy!'"

John, who argues that "people think I'm a better singer than I am", took the time to discuss his Hairspray character in a little detail. The star jokingly compared the DJ to US TV and radio personality

Ryan Seacrest, who is dating Julianne Hough.

"I play Corny Collins, he's sort of a DJ, he hosts a music show. Sort of like a straight Ryan Seacrest!" he teased. "Ryan's a friend, we've kissed." (C) Cover Media