Acclaimed San Antonio, TX based guitarist Ron Jarzombek (BLOTTED SCIENCE, WATCHTOWER, SPASTIC INK) has uploaded an 8-minute preview of his forthcoming 12 Tone Variations instructional DVD on his official YouTube channel - check it out below.

The posted sneak peak is a 4-part dissection of the song 'Oscillation Cycles', featured on 'The Machinations of Dementia' CD by Blotted Science, Jarzombek's instrumental extreme metal project with bassist Alex Webster (CANNIBAL CORPSE, HATE ETERNAL) and drummer Charlie Zeleny (JORDAN RUDESS, ex-BEHOLD THE ARCTOPUS).

States Jarzombek: "At last, here's a clip from one of my upcoming DVDs. Not sure when they'll be released but I wanted to let you guys check out what I've been working on, and what I'm trying to do with these instructional videos. As you can see there is a lot more going on than just a guy sitting down with a guitar in his hand and bookshelves in the background. I’ve put in a bunch of time transcribing all of the material that will be covered in the DVDs (which includes both Spastic Ink discs, both solo albums, and the Blotted Science CD) and writing animation sequences to explain the theory involved. I am using split screens to fully illustrate all parts being played simultaneously. I've been talking about these DVDs for years and haven't had anything to show for all the talk - until now. So far, the feedback I've been getting has been very encouraging. Seems like I’m headed in the right direction with this mammoth undertaking.

I also wanted to mention that even though I'm very much motivated to get these DVDs done, progress tends to slow down quite a bit when I'm working on band related projects. First was the Blotted Science writing and recording of The Machinations Of Dementia; now Watchtower is in writing/recording mode. Rick (Colaluca) just recorded three Watchtower songs the other day, so here comes over a hundred hours of production on that end. And we still have to complete writing the last song for 'Mathematics', and then rehearse the final four songs before Rick can record them. The reality of it is - when I'm involved with other band/project members and they have time to work, that takes precedence. When Alex (Webster) gets off the road with Cannibal Corpse in a few months, I'll drop whatever DVD stuff I'm working on at that time, too, and focus more on the next Blotted Science CD."

Jarzombek plans on issuing a total of 3 instructional DVDs, tentivately titled Common Scale Use and Abuse, It's About Time, and 12 Tone Variations.