Photos: Backstage Lollapalooza 2011 Portraits
Skylar Grey

During a busy Lollapalooza weekend -- between performing her own set, joining Eminem onstage and jumping in for an impromptu performance with YouTube sensation Karmin -- Skylar Grey squeezed in an on-camera chat session at the Billboard backstage tent. She dished on frequent collaborator Eminem, and working with Marilyn Manson and producer Alex Da Kid on her new album. Watch below.

Grey co-wrote and snagged a Grammy nomination for her work on Eminem's "Love The Way You Lie," and she joined him onstage at the festival last weekend during "I Need A Doctor," on which she sings the hook.

Lollapalooza 2011: Skylar Grey Crashes Karmin's Billboard Tent Jam

"Em is a really cool guy," Grey said about the chart-topping rapper. "He's very sarcastic, makes jokes a lot. I am just inspired to be working with him because he is such a true artist. When he goes back into his room and writes his verses, and he comes back and they're genius, I'm just blown away constantly by him."

Skylar Grey Drops 'Dance Without You' Track As Free Download: Listen

Producer Alex da Kid (B.o.B.'s "Airplane"), who worked with Grey on "Love the Way You Lie," produced her forthcoming album, "Invinsible," dropping this fall on his KIDinaKORNER label and Interscope Records. She also said that Marilyn Manson is featured on the album, on a track called "Can't Haunt Me."

The upcoming album, Grey said, "tells the story of my transformation into Skylar Grey from my previous persona. It takes you on a little journey. Everything sounds different -- every song sounds different. It's really diverse. It has elements of hip-hop, rock and singer-songwriter."

Skylar Grey Says Debut Album Will Explain 'How I Became Invincible'

The first single, "Invisible," dropped Tuesday (Aug. 9). "['Invisible' is] a song about how no matter how hard you try, sometimes it feels like no one's noticing," the 25-year-old singer-songwriter explained. "And that's something I felt a few years ago when my whole music career fell apart -- even though I'd given 20 years of my life to it -- and no one was caring about what i was doing."

Grey will be touring domestically and internationally until the full "Invinsible" album drops later this fall.

Reporting by Lisa Binkert, Chicago.