The announcement that Black Sabbath would open 2016 with the initial dates on its final tour immediately triggered the question that usually greets news of farewell tours: Will this really be the last roundup for the genre-defining heavy metal band?

If singer Ozzy Osbourne and bassist Geezer Butler’s responses during a January teleconference interview are any indication, there’s no wiggle room when it comes to calling this tour final.

“No,” Osbourne replied succinctly to a query about whether the band might change its mind about future activity.

“It’s definitely the end,” Butler chimed in, reinforcing Osbourne’s response.