Chris Newman - first assistant director explained how complicated it was to film the Dancing Queen song in the film ... he's executive producer on Mamma Mia! Here we go again!

ET caught up with Nicolas Cage ahead of his very first western ... performed a Tango to 'Mamma Mia' during Monday's Movie Night. Lily James and Jessica Keenan Wynn have some stellar ideas ...

ET sits down with the cast of 'Mamma Mia ... her new 'Dancing Queen' album of ABBA covers, out Sept. 28. Amid the sun-scorched days of this summer came a refreshing wave of movies, music and ...

In the first "Mamma Mia" movie, Andersson played the piano on the dock while the cast performed "Dancing Queen." Ulvaeus appeared in the ending credits as a Greek god during the cast's performance ...