Published Tuesday, 03 June 2014
Jack Pack won the BGT public vote on Saturday. (© Getty)
The four-piece vocal group topped the public vote following Saturday's semi-final and they are now focused on their important showcase for this week's final show.
Group member Alfie said: "We are incredibly nervous. We haven't even chosen a song. We need to get one locked in so we can get to grips with the staging, lighting and everything else for the final.
"We spent over three weeks rehearsing for the semi-final and we only have one week to prepare this time.
"We need to work on the song and the harmonies so there will be no time to relax this week. Sean might give us the odd massage but we need to go all out."
After wowing the judges with a rendition of Frank Sinatra's classic My Way during the semi-final, audiences are now wondering how the group can top their last performance.
The boys said they been trying to decide whether to stick with what they know or go with something totally different.
"We could do a Jack Pack version of a modern song," Andrew said. "Or we could do a classic, something Rat Pack or Michael Buble."
Adam admitted they were curious about the competition.
He said: "We are looking forward to seeing Lucy Kay's performance. She's amazing and sings epic songs.
"We want to know who the Wild Card will be. It must be an incredibly hard call."
Catch the Britain's Got Talent final on UTV this Saturday from 7pm.
© UTV News