Previously known for her radio-friendly pop, Kate Nash has now taken her music in a whole new direction with new single Under-Estimate The Girl.
In Fairness, Kate's biggest song Foundations isn't exactly a barrel of laughs, but most of her songs like Mouthwash and Pumpkin Soup are bubblegum good fun we think you'll agree. Now Kate's gone all grunge and stroppy and we're not sure we're ready for it - and Twitter's definitely not...
thomdenson said: "The new Kate Nash song/video is a joke right?"
"After hearing the latest Kate Nash song all I can say is, Caroline is no longer the victim, my ears are," JoeHaith85 said.
And our personal favourite is weeclaire's response to the track: "My "so terrible I'd rather listen to the sound of cats farting" award goes to Kate Nash's 'Under-Estimate The Girl'."
Kate's currently working on her third album, the follow-up to 2010's My Best Friend Is You.
So what do you think - do you like Kate's new musical direction or has she taken a wrong turn?