Don't Look Down” is her official debut as Skylar Grey, the singer, born Holly Brook Hafermann and raised in Mazomanie, Wis., has been making albums since she was a tween. Grey and her mother sang as a folk duo under the name Generations; they released three indie discs. “I learned a lot about professionalism, how the show must go on even though I feel like [expletive] sometimes,” Grey remembers. “I have a lot of experience in the studio, performing onstage, talking to an audience. I learned most of that stuff when I was performing with my mom.