Anna Maynard presents the singing competition where the contestants’ mums are the judges. Eight new talented teens arrive at the music mansion and take part in a live streaming challenge with Strictly’s Saffron Barker.

Girls Aloud’s Nicola Roberts sets the singers a 'protect our planet' songwriting challenge. Can the mums face their fears and board a terrifying rollercoaster to win that final Sing Off spot?

Choreographer to the stars Liam Lunniss puts the singers' dance skills to the test, before the mums get to show off their own moves.

Lady Leshurr runs a rap masterclass, and the mums are out on the football pitch.

The singers head to Radio 1 to be interviewed by Jordan North.

The singers form two bands with the help of Four of Diamonds, while the mums dive into their challenge in the Got What It Takes pool.

The singers take to the West End stage before a Greatest Showman sing-off, and the mums turn photographers to shoot their singer's first album cover.

Pop megastar HRVY surprises the singers as they learn his hit song Personal, then sets them a music video challenge. Can anyone snatch the fast pass to the grand final from current leader Ned?

It’s the semi-final from the world-famous Metropolis Studios. Which singer will get your vote to see them in next week’s grand final?