Skylar Grey is keeping her debut under wraps. While the mysterious singer-songwriter remains tight lipped on specific details surrounding her project, she did offer a hint of what’s to come.

The Grammy-nominated Grey, the secret weapon behind Eminem and Rihanna’s “Love the Way You Lie,” Dr. Dre’s “I Need a Doctor,” and T.I. and Christina Aguilera’s “Castle Walls,” is working with producer Alex Da Kid on her Wonderland Music/Interscope Records debut. The first single is expected within the next month.

“I can tell you that it sounds unlike anything you’ve probably ever heard,” she teased to AMP Radio’s Carson Daly about the track. “We stick to what works, but we also like to push the envelope, and Alex and I push each other creatively outside of our comfort zone ’cause we like to keep creating new sounds.”

Not much is known about Grey’s album, due later this year, except that it may have a hip-hop-influenced sound. “Possibly, nothing nailed down yet,” she said, adding, “Lots of really big exciting things happening, but I can’t talk about them yet because we’re being mysterious as always.”