BROOKLYN, New York — Like his younger brother, Nick, before him, Joe Jonas is gearing up to release a solo album after achieving success as a group. Without Nick and older brother Kevin by his side, Joe says it was a bit overwhelming at first.

But the 21-year-old, who will release Fast Life in September, eventually realized that he could count on the support of his fans, who would get to see a new side of him with this solo album.

"It was scary in the beginning just because I knew this is my one opportunity to show people my journal: the good and bad of every relationship I've been in, you know, [and] what I look for [in relationships]," Joe told MTV News backstage on Wednesday at the Sounds Like Paper Concert at the House of Vans in Brooklyn, New York. The singer was celebrating his Paper magazine cover and performed four songs, including his Chris Brown-penned single "See No More."

He also talked about other inspirations for the album, including "being on tour with my brothers, being in a band." Jonas says his approach was to "almost talk about the fans and my point of view and how I see them."

The songs on Joe's upcoming album won't sound like the ones that made the Jonas Brothers famous, he said. They're unique to Joe, fusing his love of house music and mainstream pop&B instead of the pop/rock of a JoBros album. "It was really, really cool to have those experiences [from] all my life [and] to be able to write about it and on my own," he explained. "And also on the music side, it was a fun process. It was almost an evolution process, because in the beginning it sounded nothing like it is now. It was totally different and very singer/songwriter, and I naturally love dance music and urban, hip-hop music, so I wanted to be able to make something new for them to hear."

Are you looking forward to Joe's solo album? Tell us in the comments!