What makes Time Is the Key by Pierre Moerlen's Gong notable?

The album is significant for its innovative blend of progressive rock and jazz elements, reflecting a growing trend in the late 1970s. It received critical acclaim for its complex arrangements and musicianship, helping to solidify Pierre Moerlen's Gong as a pioneering force in the progressive rock genre during this era. Released in 1979, 'Time Is the Key' marks Pierre Moerlen's Gong's transition into a more jazz-influenced sound after the departure of founding member Daevid Allen. This album follows their previous effort, 'Expresso II,' and showcases Moerlen's vision for the band's evolution, steering it away from its psychedelic roots towards a more sophisticated instrumental approach.