What makes Leave It Open by Pierre Moerlen's Gong notable?

'Leave It Open' is notable for its experimental blend of progressive rock and jazz elements, reflecting a unique approach that would influence subsequent artists in both genres. The album received positive reviews for its musicianship, particularly highlighting Moerlen's innovative drumming techniques, contributing to a burgeoning interest in fusion styles during this era. By 1980, Pierre Moerlen's Gong was transitioning into a more jazz-oriented sound following their previous album 'Expresso' in 1978. 'Leave It Open' marked a significant shift, emphasizing Moerlen's focus on percussion and complex arrangements while solidifying the band's identity post-Daevid Allen's departure. This album also represented their continued evolution within the progressive rock genre during the late 70s and early 80s.