The pair have hired a theatre company to visit their house in Surrey to enable their family to brush up on their vocal skills, reported a website.
Although the idea was originally to help their children Pax, Knox, Vivienne, Shiloh, Maddox and Zahara learn to sing - but Pitt and Jolie haven't been shy about picking up the microphone.
"Brad likes belting out a tune in front of the kids. Angelina thought it would be a fun way for the kids to practise their singing and the theatre group have really helped. They've only been around a couple of times but Brad and Ange hope to make it a regular thing during their stay in the UK," a source said.
The kids chose to sing their favourite pop songs while Pitt, 47 and Jolie, 36, went for older, classic pop tunes. The family plans to live in the UK for two years, while Angelina shoots three movies back-to-back there. They also have a property in Richmond, which they recently purchased after renting for some time.
Photos: Katrina Kaif, Shamita Shetty at Mumbai airport
Photos: Varun Dhawan, Alia Bhatt promote 'Badri...' on 'Dil Hai Hindustani'
In pictures: 15 facts about kissing that will surprise you
Photos: Shahid Kapoor and Mira Rajput at cafe in Bandra
Photos: Deepika Padukone, Neha Dhupia and Soha Ali Khan at event