Tool guitarist Adam Jones has hinted at the struggle that making their new album has been.
Their last album "10,000 Days" was released in 2006, making the current seven-year gap between LP releases the longest of their career.
Adam says their success means the freedom of their lifestyles affects the pace of recording. "It makes everything go slow, which is unfortunate," he told Revolver, adding that they've changed as a band - and perhaps as people.
"We've become even more eclectic and distant, so getting things done is very hard. There are a lot of other interests," he says. "We had two really bad things happen, things that I'm not going to get into, that set us back emotionally and mentally. Were past them now everybody's recovered and that process has actually added to us focusing on being creative. Maybe sometimes bad things happen for a reason."
Tool have also faced physical issues. Their drummer Danny Carey broke four ribs when he fell off a scooter in January, putting their album even further behind schedule.
Fans will be concerned that Tool are struggling to function as a band because of their distance and the time between albums, but Adam is optimistic that the final product will be worth the wait.
"When it's done it's going to be good. And that's the point we're not going to put out something that sucks just to put it out," he said.
Meanwhile, Tool will celebrate the anniversary of their debut album "Opiate" with a limited edition 5,000 copy re-release.