Pentatonix's Kirstin Maldonado -- now known as simply kirstin -- has always been inspired by bad ass women in the pop punk scene.
"My mom got me a lot of their CDs just because she wanted to show me really incredible, strong women," the singer tells Billboard. "It was kind of a departure from the bubbly pop scene that was going on [in the early 2000s]. There was a bit of grit to them."
On Avril Lavigne: "Avril really helped pave the way for merging two different genres of music. It was such a departure of what was popular at that time."