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VIDEO: The Ultimate AC/DC Bait and Switch on 'Britain's Got Talent'

When Jenny Darren walked onto the stage to audition on Britain's Got Talent, the judges clearly didn't think much of the 68-year-old woman.

But then, when she stripped away her dowdy duds to reveal badass rock garb and proceeded to belt out AC/DC's "Highway to Hell," their jaws dropped.

ROCK SHOCK! Get your air guitars out for Jenny Darren! | Auditions | BGT 2018

If you think Jenny Darren is your average 68-year-old retiree then think again... Get ready for some serious head banging when Jenny takes to the stage! See more from Britain's Got Talent at http://itv.com/talent SUBSCRIBE: http://bit.ly/BGTsub Facebook: http://www.facebook.com/BGT Twitter: http://twitter.com/BGT

Of course, Darren is no musical fluke.  Per Louder Sound, Darren once fronted the band Stoney End, who opened for AC/DC back in 1977. She also had a solo career where she originated "Heartbreaker," which would go on to be Pat Benatar's breakout hit in 1979.

JENNY DARREN - Heartbreaker (1978)

ARTIST: JENNY DARREN TITTLE: Queen of Fools - 1978 MUSIC: Heartbreaker A1 Heartbreaker 3:03 A2 Use What You Got 3:31 A3 Burning Love 3:13 A4 I'm A Woman (I'm A Backbone) 3:19 A5 So Many People 5:25 B1 Queen Of Fools 2:54 B2 I Keep It Hid 3:30 B3 Crying Shame 2:49 B4 Taking It For The Love 2:53 B5 Lay Me Like A Lady 3:32 NOTA 1: Não tenho os direitos sobre esta música.

Erica Banas is a rock/classic rock blogger that loves the smell of old vinyl in the morning.