When Fall Out Boy hit the studio with Ryan Adams [article id="1711032"]earlier this summer[/article], they weren't sure what to expect ... and once they recorded an album's worth of songs in just 48 hours, they were really at a loss.

For starters, there was the issue of just when would they'd be able to actually release those new songs ... after all, their [article id="1706271"]Save Rock and Roll[/article] album had hit stores back in April, and the idea of putting out a second record seemed like a stretch, at best.

But fast forward a few months, and things have changed. On October 15, FOB will release [article id="1714801"]Pax-Am Days,[/article] a collection of eight fast-and-furious songs named after the studio where they were recorded. And as Pete Wentz explained to MTV News, everything about the project -- from its rush-release to its breakneck pace -- has reinvigorated the band.

"It was strange, because we weren't sure how it was going to be released, but know that we have made some new fans -- and younger fans -- with the release of Save Rock and Roll, and rather than blowing them off, we figured it might be cool to let 'em check out some vinyl and show 'em some of the bands and music we grew up on," Wentz said. "I mean, besides Jay Z, I don't think anybody was born cool, so sometimes it's nice to show new kids the ropes. Fall Out Boy has always been about inclusion.

"I remember my friend's older brother playing me Metallica's Kill 'Em All on one side of a cassette tape and Screeching Weasel on the other, and I about wore that thing out. That's what we wanna do with this album," he continued. "It's an EP, so it's not the follow up to Save Rock and Roll; rather this will be something added on to it. It is the other side of the conversation, to us at least."

And the other side of the conversation is definitely loud. As Pax-Am's first single, "Love, Sex, Death" shows, Fall Out Boy are focusing on playing hard and fast, celebrating the punk and hardcore they grew up listening to, and, hopefully freaking out their fans just a bit. In a project where there truly has been no plan, that's about as close as Fall Out Boy have come to a mission statement.

"The truth is, both lyrically and musically, I think we threw some things in there that we probably would consider outside-the-box of a standard Fall Out Boy full- length," Wentz explained. "There were moments where I felt like maybe we were taking it a bit too far, and I'd look at Ryan and he has this amazing mischievous grin on his face that said 'No way!' And we'd do it. There are some gems in all that grime on there ... I'm proud of it."