Holly Brook Hafermann (born February 23, 1986), known professionally since 2010 as Skylar Grey, is an American singer-songwriter and record producer from Mazomanie, Wisconsin. In 2004, under the name Holly Brook, at the age of 17, she signed a publishing deal with Universal Music Publishing Group as well as a recording contract with American rock band Linkin Park's Machine Shop Recordings label imprint. In 2006, she also released her debut studio album Like Blood Like Honey, under the aforementioned labels.
In 2010, she co-wrote Eminem and Rihanna's hit single "Love the Way You Lie", alongside Eminem and British record producer Alex da Kid, who subsequently signed her to his label imprint, KIDinaKORNER. Grey is also best known as a guest vocalist on several singles, including Fort Minor's "Where'd You Go", Diddy's "Coming Home", Dr. Dre's "I Need a Doctor", Nicki Minaj's "Bed of Lies" and Macklemore's "Glorious".
Grey's second album, Don't Look Down, was released in July 2013, under KIDinaKORNER and Interscope Records. The album produced four singles including the Eminem-assisted lead single "C'mon Let Me Ride". Grey's third studio release, Natural Causes, was issued in September 2016.