The Garnett Family, mum and three daughters amazed the judges with their beautiful harmonising vocals.
The Garnett Family are mum Helen (46), who works as a choir teacher, and daughters Rachel (20) and twins Anna and Abigail (17), who are all students.
They live in North Lincolnshire.
The girls have performed together as a trio but BGT is the first time they have performed with their mum on stage.
The girls said: “Mum is my inspiration, she practically brought me up on her own.”
“My life fell apart, the twins were six months old and Rachel was three” Mum Helen said.
“We didn’t have a lot but singing was free,
“I’m now happily remarried with the most amazing man that i’ve ever met.”
The family sang Jess Glynne’s Take Me Home.
Find out their result on tonight’s show.
Britain’s Got Talent airs tonight (7th May) on ITV from 8pm. Britain’s Got More Talent follows straight after on ITV2.