Lance Bass: "Out Of Sync"

Lance Bass "tells all about his life, his music and his sexuality" in an upcoming autobiography, the publisher announced Wednesday.

"Out of Sync" is scheduled for publication in October, said Simon Spotlight Entertainment, an imprint of Simon & Schuster.

The publisher promises a behind-the-scenes look at the 27-year-old singer's days in boy band 'N Sync, as well as his headline-making venture to undergo astronaut training for a Russian space mission, which didn't pan out because he couldn't come up with the funds for the trip.

Bass announced in July that he is gay. He has said that he didn't reveal this earlier because he didn't want to affect 'N Sync's popularity.

The band, known for a string of hits including "Bye Bye Bye" and "It's Gonna Be Me," went on hiatus in 2002.