Moses will be remembered as an L.A. art world fixture, one of the city’s most productive and experimental artists of the last half-century. He had a restless romance with abstract painting that sparked a perpetually evolving body of work, leading him to dub himself “The Mutator.” Moses formed the “Cool School” of artists — who included Ed Ruscha, Robert Irwin, Larry Bell, Edward Kienholz, John Altoon, Ken Price and Billy Al Bengston — at L.A.’s influential Ferus Gallery in the 1950s and ’60s. Their raucous partying and creative camaraderie not only fused a nascent local scene but made the art world beyond take notice.