BLACK SABBATH guitarist Tony Iommi has told NBC News that he is in the process of mixing the sound from the band's final shows in Birmingham, England for a possible live album.

"We'll actually be doing a documentary," he said. "My job at the moment is to have a listen to what we've done."

Iommi, who was diagnosed with cancer in late 2011 and is currently in remission, has written a piece for the long-running "CSI" television series and has "bags" of riffs he came up with for BLACK SABBATH that might one day wind up on a solo album.

"I'm certainly not retiring from playing and doing stuff," he said. "But I think since my illness I've had to look at things differently, think sensibly. I feel fine, but I still go for checkups and tests and at the moment I'm okay."

BLACK SABBATH finished its year-long "The End" farewell tour on February 4 in the band's hometown of Birmingham, closing out the quartet's groundbreaking 49-year career with an emotional 15-song set.

The band decided to make this tour its last because Iommi can no longer travel for extended amounts of time.

The guitarist recently said that he wouldn't rule out BLACK SABBATH recording new material or playing a one-off event.

The original lineup of SABBATH came together in 1969 with Iommi, Ozzy Osbourne on vocals, Geezer Butler on bass and Bill Ward on drums. That lineup recorded and toured through 1978, and periodically reformed through the '90s and 2000s for live work.

They regrouped again in late 2011 for a new album and tour, although Ward dropped out after a few months over financial issues. SABBATH has used Ozzy's regular touring drummer Tommy Clufetos since then for live work. RAGE AGAINST THE MACHINE's Brad Wilk laid down the drum tracks on the album "13", which came out in June 2013.

Osbourne is reportedly at work on a new solo album, and already has a pair of shows scheduled for this summer.