"We didn't know what song we should do next, and I suggested that we do something from Mamma Mia!," explained Abi. "I started playing the 1999 original soundtrack on my phone, and I don't think my dad realised how readily available it was, and we all enjoyed being able to sit around the table and listen to him from 21 years ago.
"I put 'Voulez-Vous' on as I was trying to find an especially upbeat song to dance to, and we forgot that Harry had dialogue during it. When dad came on I said we should get him to lip-synch to himself and then go into the dance! They took a little convincing as surprisingly they don't like bringing attention to themselves all that much, but we were all in hysterics once we started."