What makes The Guerilla Band by Hal Galper notable?

This album is notable for its experimental approach to jazz during the early 1970s, a time when many artists were pushing boundaries. It has been recognized for influencing subsequent generations of jazz musicians who explore free-form structures and complex arrangements. When 'The Guerilla Band' was released in 1971, Hal Galper was transitioning from his role as a sideman for legends like Chet Baker and Phil Woods to establishing himself as a bandleader. This album marked his first major project under his own name, showcasing his unique compositional style and improvisational skills.