Sometimes to move forward, we have to move backwards first.  That's what Chuckie and Betatraxx did when they hooked up with former Guns N' Roses lead guitarist Slash to collaborate on this new earth-shaking rock'd out house jam, "Rocktronica." After premiering the track live during the second weekend of Ultra, we have the instrumental version of the the new cross-genre gem and we're happy to report that this one just rocks as hard at home as it did on the main stage. Surely technology has made it possible to imitate and recreate solo guitar riffs, but in listening to this one, you can hear the raw power that Slash brings with his own shredding.  You can grab the download here and test it yourself!