Joe Jonas' was nervous about saying sorry to his former loves on his solo album.

The singer's debut solo record, 'Fast Life', will be released on October 11 and Joe - who has previously dated a string of beauties including Taylor Swift, Demi Lovato and Ashley Greene - admits he was nervous about baring his soul and "putting it all out there" on a "personal" track about his love life.

He told RollingStone.com: "I wanted to be able to create something that spoke volumes about what I've gone through the past few years.

"'I'm Sorry' was the number one song that was really a lot to put on the table. It was a really personal song about something I was going through in a relationship. To put it all out there and just be that vulnerable is not always easy, but I was really happy with the outcome."

However, Joe isn't giving up on Jonas Brothers - his band with his siblings Nick and Kevin - and the trio will return with new music in the future.

He added: "With my brothers we're definitely gonna create more music down the line. Right now we're just focusing on our individual stuff. But we'll definitely be doing it soon."