Outkast star Andre 3000 is planning to retire from rap next year (15) after he turns 40.

The Ms. Jackson hitmaker, who will mark the age milestone in May (15), is convinced hip-hop is a young man's game and he confesses he can no longer keep up with his new peers.

He tells the New York Times, "I remember, at like 25, saying, 'I don't want to be a 40-year-old rapper.' I'm 39 now, and I'm still standing by that. I'm such a fan that I don't want to infiltrate it with old blood."

Andre 3000 reveals he recruits his teenage son Seven, with R&B singer Erykah Badu, to critique his verses on tracks by artists like Beyonce, Lil Wayne, Chris Brown and Frank Ocean, because he is no longer sure what will be a hit with young fans.

He explains, "I struggle with the verses. I don't sit around and write raps, I just don't. Now the only time I'm really inspired to write raps is if an artist that I enjoy invites me to their party. So if Future calls and says, 'Hey man, I want you to do this,' I don't want to let Future down. I don't want to let Lil Wayne or Drake down, because I love them...

"My son, he's 16. Him and his buddies, they'll be in the car, and I'll say, 'Hey, what do you think about this verse?' That's my gauge at this point. I don't have the pulse. Part of art is knowing when not to put paint on. And when to change your medium."