The Big Performance tour bus rocks up in Leeds, where Gareth is hoping he can shake, rattle and roll his group of shy singers into letting their hair down and having some fun. To do this, he has chosen a music style that was the soundtrack to the teenage revolution in the 1950s - rock and roll - and who better to draw inspiration from than the King himself, Elvis Presley?

Gareth wants to encourage the group to leave their cares behind and focus on how performing a song can change the way you feel - but he may have his work cut out convincing this group that the song Jailhouse Rock is fun to perform. Also, Gareth decides that to really get into this new style, they should start dancing as well as singing, so how will the kids cope when Strictly Come Dancing duo Ali Bastian and Robin Windsor turn up to give a masterclass in the jive?

This episode's soloist, Namibian-born Charlize, is particularly reluctant to embrace rock and roll, and finds the tongue-twister lyrics difficult to get her head around. But she and the rest of the group must learn the complicated words in time for the performance. So far, the group have only performed to each other and a few passers-by on the street. This time the stakes are raised as they sing in front of professional performers, who are experts in rock and roll.

Are they going to be able to pull off an energetic performance, or will the pressure get to them? Show less