LOS ANGELES (AP) — Sometimes Andre 3000 wonders: “Will I be the Hey Ya! guy forever?”

The Grammy-winning rapper says he hasn’t figured out what to do next in music. His last album with his best-selling group Outkast was released in 2006. Their hits include Ms. Jackson and Hey Ya!

Andre 3000 said in a recent interview that he feels “self-doubt” and wonders at times if he already had his last shot at musical success. He says pondering the next career move is “really scary and really exciting at the same time.”

The performer is the star of the Jimi Hendrix biopic, Jimi: All Is by My Side, released last month.

The 39-year-old says his next move in music will be solo instead of working with Big Boi as Outkast.

In an interview with Vogue, the rapper talked about how the film triggered memories of his start with Outkast.

“Just relating to starting off and trying to make it in an industry, to try to build yourself to be an entertainer. Early Outkast shows weren’t as free-looking as now—when you first start, you’re not as free. You’re kind of self-conscious. I didn’t move a lot onstage at first. You’re doing your little lyrics and then getting off stage,” he said. “But as time goes on, you build confidence, build a certain freedom, build as a performer. You see in this movie, Hendrix starts off and didn’t even like his voice. And I can relate to that. The first time I heard my voice on the radio, it just sounded weird. I can relate to the trajectory of starting from nothing and getting to a place—Hendrix has probably done the best rock performance in history with Monterey.”