Helen Mirren

Helen Mirren will guest-star on Glee — but you'll have to listen closely to catch her.

The Oscar winner for The Queen will provide the inner voice of a character in what is potentially a recurring gig, TVLine reports. Mirren recorded the "long and hilarious monologues" two weeks ago and later surprised the cast on set, a source tells the site.

Check out photos of Helen Mirren

The part was written for Mirren, and the show's producers asked Eric Stoltz, a frequent Glee director and Mirren's The Passion of Ayn Rand co-star, to pitch it to her.

Mirren's episode will air Jan. 17 and will also feature The Real Housewives of Atlanta's NeNe Leakes as new swim coach Roz Washington.

Are you excited to hear Helen Mirren? Whose inner dialogue would require the dame's efforts?