You may not know the name yet, but Skylar Grey is quickly becoming one of music’s most deadly secret weapons. As the first signee to producer Alex Da Kid’s Wonderland Music imprint, the Grammy-nominated singer-songwriter has contributed to records for Eminem and Rihanna (“Love the Way You Lie”), T.I. and Christina Aguilera (“Castle Walls”), Diddy-Dirty Money (“Coming Home”), and Dr. Dre and Eminem (“I Need a Doctor”).

The Wisconsin native, born Holly Brook Hafferman, has done a good job of keeping herself hidden. But we’ve finally been able to match a face to the name. Meet the woman behind the hits below.