On Thursday, the cast of Broadway's Mamma Mia! visited TODAY's Citi Concert Series to perform a selection of songs from the hit show, including a medley of the title song and "Dancing Queen." The ...

Ridiculously catchy, even if the lyrics aren’t quite right! Amanda Seyfried dropped by The Tonight Show Starring Jimmy Fallon on Wednesday to promote her new movie, Mamma Mia! Here We go Again, and ...