The group of 50 OAPs are set to perform for the judges in tonight's audition show, hoping to make it all the way through to the live finals in May.
But according to The Sun, The Zimmers aren't new to the business, having released an album and singles in the past, which charted in the Top 40.
The source told the tabloid recently: "Many of the other acts have asked whether it's fair to have an established band auditioning at all.
"The fact of the matter is the talent pool is drying up so they've had to extend the boundaries to get entertaining acts the public want to see.
"It's not like they're Coldplay. They haven't had enormous success but it is true that they have had a record deal and released singles in the past."
But as they shuffle on stage on tonight's latest audition show, the panel already seem bored.
Tune into Britain's Got Talent tonight to see if they can pull it out of the bag!