Grohl added that he has "a crazy idea of what I want to do with the next record and how we record it. It's not conventional. It won't be a conventional record."
Of course, he's not saying what that method will be yet.
Foos drummer and occasional lead singer Taylor Hawkins, meanwhile, noted that the group's follow-up to 2011's "Wasting Light" is "just sort of a germ in Dave's head at this point. He says he's got a lot of ideas. We haven't really gotten down to brass tacks. I don't know what the path will be. It's always a little different, which is good."
Meanwhile, Grohl, Hawkins, the rest of the Foo Fighters and their assorted Sound City Players mates – including Stevie Nicks, John Fogerty, Rick Springfield, Cheap Trick's Rick Nielsen, Nirvana's Krist Novoselic and more -- will gather Thursday night for the all-star troupe's final scheduled concert.
"In the movie we're talking about feel and collaboration and performance and the human element," Grohl explained, "so I thought to take that even another level further, why not bring this entire project to the stage?"
As for the Sound City Players' future, Grohl acknowledged that "so many people have said, 'Oh, you've got to go on tour' and 'Oh, you've got to do more shows.' I swear to God I would give my left…arm to do it. Logistically you can imagine it's not like putting together, it's like taking 'Hollywood Squares' on the road. It's nuts." Hawkins added that, "It's an expensive venture. I don't think it's a money-maker -- but I think it could be. Some of the shows have been amazing."
Neither man thinks we've seen the last of the Sound City Players, however. "We'll play the Oscar party," Grohl noted with a laugh.