Today, GuitarWorld.com presents the exclusive premiere of Homunculus, the new album by Tauk, an instrumental fusion/pop/rock band. The album, which was produced by Robert Carranza (Mars Volta, Jack Johnson), was released today, April 30.

The mechanics behind basic delay are simple: Play a note or chord into an audio-storage medium, then get that device to play that sound back to you — either once or multiple times — after whatever amount of time makes you happy. Of course, people have improved upon this simple formula, taking delay to new depths and heights, and often including an infinite assortment of types and combinations in one pedal.

With Deep Purple's new studio album, Now What?!, waiting in the wings, we thought we'd take a glance back at the classic Mark II lineup of the band — Ritchie Blackmore, Roger Glover, Ian Gillan, Ian Paice and Jon Lord — tearing it up, live in New York in 1973.

For Tool, music and imagery are inextricably united—which is why the group is reissuing its 1992 debut EP, Opiate, in an extremely limited edition with new artwork and collectibles. Adam Jones explains.