Barnsley girl band Dolly Mix - made up of sisters Nicky and Paige and their friend Alesha - have only been singing together for three months but they made it through to a shortlist that was selected by the producers of Britain's Got Talent.
The YouTube competition encouraged people to vote for the favourite YouTube act to get the chance to perform live on stage in front of the BGT judges.
The band will find out on Sunday if they made it.