Gobsmacked! is the latest show from the producers of The Magnets and Soweto Gospel Choir – and if Pitch Perfect didn’t turn you into an a cappella fan, this show will.

The seven performers (five guys and two girls) were selected during an open audition that attracted more than 600 applicants, so you know this performance is brought to you by the cream of the crop of a cappella.  The show has previously been performed at the Edinburgh Festival Fringe and is now making its London debut at the Udderbelly Festival on the Southbank.

The cast bring interesting and unique twists to songs such as; Queen’s ‘Don’t Stop Me Now’, Sia’s ‘Titanium’, The Killers’ ‘Mr Brightside’ and a mash-up of Adele’s ‘Rolling in the Deep’ and Gnarls Barkley’s ‘Crazy’, among many more. The cast try to cover as many fan favourites with a medley of popular songs throughout the ages, so audiences can be sure to hear one of their favourite songs among the set.

It’s not too clear if there’s one plot line running through the show, although the songs do seem to connect in some way. There is definitely a theme of relationships – both romantic and platonic – running through the show. The dynamic between the group is remarkable and the way they use their voices not just to sing is enjoyable to watch. They manage to bring humour to their performance without using any words whatsoever.

All the performers are incredibly talented, but the absolute star of the show is Ball Zee a.k.a Patrick Hirst. His crazy beatboxing skills are used to control the whole show and the other performers in a way that is not only highly entertaining but incredibly skilful. About half way through the show he performs the most impressive solo, without giving away too much, his skills are unbelievably extraordinary and worth seeing. Ball Zee is one of the UK’s leading beatbox artists and after seeing him perform, there’s no question as to how he gained that status.

Each singer has a turn centre stage and it is clear that it is truly a collaborative and fun experience for the cast. The audience also struggle to sit still throughout the show with heads bobbing and feet tapping all over the place, and some even singing along to their favourite tunes. In fact, by the end you’ll be busting to get up and join in.

Gobsmacked! plays at the Udderbelly Festival on Southbank until 17 July. For more information and tickets, see the Udderbelly Festival website.