He was promoting his upcoming solo album, "Crosseyed Heart," which comes out on September 18.
But in the course of the interview, he had some pretty harsh things to say about rap music and heavy metal too.
Here are some excerpts, from Rolling Stone...
On rap: "What rap did that was impressive was to show there are so many tone-deaf people out there. All they need is a drum beat and somebody yelling over it and they're happy. There's an enormous market for people who can't tell one note from another."
On heavy metal: "Millions are in love with Metallica and Black Sabbath. I just thought they were great jokes."
He even took a shot at the Beatles "Sgt. Peppers" album, calling it "a mishmash of rubbish..."
Here's the most amazing thing - that the interviewer was able to understand what he was saying. Keith is not known for giving the most intelligible interviews.
Check these top ten highlights from over the years...
He and his long-time beau, Miss Piggy, broke up over the summer.
Just another in a long line of celebrity break-ups this year.
He asked for privacy, but of course, you know the media.
Now, they're falling over themselves to report that Kermit's got the googly eyes for a certain red-headed pig named Denise who works in ABC's Marketing Department. She's undoubtedly working on the PR for The Muppets, which debuts soon on that network.
But poor Kermit. Now he's in a spot where he has to talk about his relationships - again!
Sheesh. I can't believe I already have to do this again... Here is the official statement on my relationship status: pic.twitter.com/gRCyl3xbfz