The pair from Hull sing separately for the judges, each hoping to get enough yeses to make it into the next round.
The siblings have their mum with them for support who says: "You can't get a closer sister and brother, they're there for each other, they love each other very much. When I watch them, my heart bursts. They're my world."
First up to perform is Jade, a 22 year old receptionist.
She begins with Say You Love Me by Jessie Ware but Simon Cowell's hand is in the air within seconds to stop her.
Given a second chance, Jade is hoping With or Without You by U2 will get her through to the next stage?
After Jade, brother Calum Scott, a 26 year old recruitment officer, goes before the panel.
Calum, who currently lives at home with his mum and sister performs a cover of Robyn's Dancing On My Own for his audition.
But will either Jade or Calum get yeses from the panel?
Other acts on tonight's BGT auditions include another sibling act, roller-skating duo Billy & Emily England, as well as free runner Matt McCreary and extreme contortionist Magdalena Stilova.
Oh, and a talking DOG!
Britain's Got Talent 2015 airs from 8PM tonight on ITV.
Browse pictures from tonight's Britain's Got Talent here...