Britain's Got Talent 2015: Five acts to look out for in live semi-final two - from Old Men Grooving to dog act Jules and Matisse

Gospel choir Revelation Avenue and contortionist Bonetics will also perform

Jules O'Dwyer and her dog Matisse won cheers from the Britain's Got Talent audience (ITV)

Tonight sees the second Britain's Got Talent live semi-final get underway, with nine acts hoping to join choir Cor Glanaethwy and dance crew Entity Allstars in Sunday's final.

The winner of the public vote will go straight through before judges Simon Cowell, Amanda Holden, David Walliams and Alesha Dixon choose between the second and third most popular acts.

Modern gospel choir Revelation Avenue, mind-boggling contortionist Bonetics and popular dog comedy routine Jules O'Dwyer and Matisse are among those competing this evening.

So which acts should you keep a special eye out for tonight?

Revelation Avenue

You're going to hear them rooooar. Twelve-piece East London choir Revelation Avenue had Amanda punching her Golden Buzzer and the judges on their feet with their powerful rendition of Katy Perry's hit. Expect much more from this lot.

Jules O'Dwyer and Matisse

Jules and her adorable man's best friend Matisse wowed the crowds with their entertaining dog catcher comedy act. Simon is an absolute sucker for the animal routines and so it seems are the viewers at home. No wonder this team are bookies' favourites to win tonight's semi.

Bonetics

If you get freaked out by seemingly impossible things - like someone who can do unbelievable stuff with their arms and legs for example - rubber man Bonetics may not be for you. This will make your jaw drop and is certainly unforgettible.

Old Men Grooving

Just five middle-aged men letting it all hang out and getting down to the sick beats of some hip-hop classics. See it to believe it.

Luca Calo

No-one expected this. Luca started his audition with an appalling performance of Christina Aguilera's "Beautiful" that quickly got buzzed off by everyone bar David. Then out of the blue - boom! Luca ramps up the sass with some killer moves in high heels.

Kickass singers The HoneyBuns, eccentric magician Michael Late, Aussie singer Alison Jiear and of course, disco dance group Groove Thing will also be performing in a bid for your votes.

Britain's Got Talent returns tonight at 7.30pm on ITV with the results show at 9.30pm.