Despite being critically panned, the “Mamma Mia” movie cast returned 10 years later for the “Here We Go Again!” sequel because they had that much fun. The second, improved story had critics and audiences pleased, and that means fans are asking for a threequel. It sounds like Amanda Seyfried has just one problem with “Mamma Mia 3”: the soundtrack.

“Listen, every single person in that movie would say yes in a heartbeat because we want to hang out with each other,” Seyfried told Collider. “That’s what we talked about last time, like did we ever think that we’d end up here again on an Island in Croatia? So yeah, I wish there was a ‘Mamma Mia 3.’”

Unfortunately, the “Mean Girls” alum doesn’t think it’s so simple. “But I’ll tell you what – I’ve said it before and I’ll say it again and I hope I’m wrong again,” she said. “I don’t think there are enough ABBA songs to make a third movie. Because we’d have to use ‘Super Trooper’ again and we’d have to use ‘Mamma Mia’ again and have to use them in a different way.”

Both those songs, as well as “Dancing Queen,” appeared in both the 2008 and the 2018 films. Seyfried acknowledged that without a Broadway show to base the story on, the writers have much more freedom because it was unexplored territory. They were able to decide what Meryl Streep's Donna Sheridan was up to in the past, and what Seyfried's Sophie would be like in the present.

“Well it’s a better story, because they had something to grow on. Like the first story had to match the stage show. So it was like, they were kind of stuck,” she said. “With the second story, it could have been anything. Having Meryl’s character die kind of gave us so many good storylines. It was kind of a genius idea because you’re like, no, we don’t want to lose her. But at the same time, look at what you can do, you can go back. And Lily James can play young Meryl. It was just perfect. It was so well written.”

It sounds as if “Mamma Mia 3” is likely. Producer Judy Craymer told the Daily Mail that she expects another film to be made eventually.

“I was meant to have been getting on with that, in my head, during these months. But then I got hit with Covid fog,” the producer explained. “I think one day there will be another film, because there’s meant to be a trilogy, you see.”

The producer added that Universal would be more than happy to produce a third feature in the franchise. The first grossed $615.7 million worldwide while the second hauled in $395 million at the worldwide box office.

For now, Seyfried is busy promoting the thriller “You Should Have Left,” which is available on demand now.

Amanda Seyfried
Actress Amanda Seyfried attends a Lancome event on Jan. 15, 2020 in Tokyo. Jun Sato/WireImage