I'm not the biggest <em>Mamma Mia! </em>fan in the world, but I do enjoy the movies and like that they have this sort of unique identity through their ABBA songs. Sabrina Carpenter could be an excellent lead. I think her music is great, and I'd be excited to see her dip into movies. That said, I hope the music will still maintain the identity of sounding more like ABBA and classic <em>Mamma Mia! </em>than a Sabrina Carpenter album.