I tried to see the Sing Along version of the movie but ended up buying tickets to the regular version. I googled the official mamma mia web page, followed the link to the sing-along theaters in my area, and from there bought tix online for the theater nearest me. It was showing on two screens, but only one was a sing-along, and the website didn't make that clear. Once we realized that it wasn't sing-along we snuck into the sing-along theater, but we missed some of the movie. So, I liked what I saw, and the sing-along part is lots of fun, but be sure to call the actual theater beforehand to make sure!