The Foo Fighters are working on their follow-up to 2011's Wasting Light.  Dave Grohl has already said the album will not be a "conventional record" and that he has a "crazy idea" for it.

Now, drummer Taylor Hawkins is revealing more about the concept of the new album.  He tells Billboard:

"We're getting our ideas together. Dave has his brain working overtime, like usual, and he's got a lot of great ideas, both musically and conceptually -- none that I can speak of at this moment, but it's gonna be great. It's gonna be cool."

Hawkins says that he believes the band's best work is ahead of them.  "I still think we haven't written our 'Hotel California' or our 'Bohemian Rhapsody.'"

In addition to his work with Foo Fighters, Hawkins wants to branch out with his side projects.  He occasionally plays with his heavy metal cover band, Chevy Metal, and he also does work with his other group, Coattail Riders.  Taylor says he has a bunch of demos, but admits to struggling with getting a full project done.