Warm Up Your Voices - "Mamma Mia! The Sing-Along Edition" Will Be Released Labor Day Weekend

Los Angeles, CA (CNS) - If you went to see the movie "Mamma Mia!" and you felt like singing along, well you are in luck. Universal plans to pump up Labor Day weekend grosses for its hit movie musical by presenting "Mamma Mia! The Sing-Along Edition" in select theaters nationwide.

The musical, which is backed by ABBA tunes, stars Meryl Streep, Colin Firth and Pierce Brosnan. The movie has grossed more than $320 million worldwide.

Domestically, it has grossed nearly $117 million and is close to surpassing "Hairspray," whose box-office take was nearly $119 million. That would put "Mamma Mia!" as one of the top-grossing musicals of all time, ranking below "Grease," "Chicago" and "The Sound of Music."

For the sing-along engagements, the movie's prints will include subtitled lyrics to all the songs so that audiences can sing along. So warm up your voices and get ready to sing "Dancing Queen."