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"I started doing a bunch of basic tracks with Chad and Robert Trujillo, who used to play in Ozzy's band," the producer tells Guitar World. "And Taylor Hawkins also came in and played a bunch on the record as well, which adds a different flair – it kind of harkened back to Ozzy's ‘80s era, in a great way. And I think it's so cool for a rock fan to be able to listen to half an album with Chad Smith on drums, and then you flip it over and you get to hear Taylor Hawkins.
"And you know, the last album was really special for everyone involved. And so there was no point in Ozzy or me doing this again unless we thought we could bring something new to the table. And I feel like we're achieving that."
He also adds that, "There's some songs on there that are like eight or nine minutes long that are these really crazy journeys. I'm really excited about it."