What makes Passin' Thru by Chico Hamilton notable?

This album is notable for its influence on the development of free jazz, showcasing Hamilton's unique ability to integrate diverse musical styles. Its critical reception was positive, helping solidify Hamilton's reputation and contributing to the broader acceptance of avant-garde jazz during the early 1960s. Released in 1963, 'Passin' Thru' was Chico Hamilton's fifth album, following his successful venture with 'The Dealer.' At this point, Hamilton was firmly establishing himself as a leading voice in the West Coast jazz scene, known for his innovative approach to instrumentation and ensemble arrangements.