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6 September 2018, 11:26
"You've got to be a brave man to sing in Mamma Mia. The spandex, dear heavens."
Both the flashback younger cast and the legends from the first movie united to sing the 1980s favourite, including Meryl Streep, Cher and Lily James.
Watch a clip from the upcoming DVD and Blu-ray release of the film showing behind-the-scenes footage above.
"I can't dance, and I don't know why they hired me for this. Probably just to humiliate me," joked Stellan Skarsgard.
Colin Firth said: "It's quite liberating, really. Also there's nothing more liberating than abandoning your dignity."
Pierce Brosnan added: "You've got to be a brave man to sing in Mamma Mia. The spandex, dear heavens."
Mamma Mia: Here We Go Again! is released as a digital download on November 12, and on 4K Ultra HD, Blu-ray, DVD and On Demand on November 26 from Universal Pictures Home Entertainment.
Meanwhile, a brand new Mamma Mia immersive dining experience will launch at London's O2 in 2019.