Gasp was an anomaly among the California punk scene of the 1990s. They played a relentlessly strange, deeply psychedelic blend of grindcore, powerviolence and noise. Their music was tough to categorize, but rewarding to the determined listener. 1998's Drome Triler of Puzzle Zoo People , their sole LP, is a high water mark in the blending of psychedelia and extreme music. They split up in 2004, and their last release was the 2005 collection An Earwig's Guide to Traveling . It would be easy to imagine such a singular group would just va…