His lyrics have been described as impressionistic, hypnotic, and modernist, while the record has been categorized as a song cycle or concept album.Īstral Weeks did not originally receive promotion from Morrison's record label and was not an immediate success with consumers or critics. The lyrics and cover art portray the symbolism equating earthly love and heaven that would often feature in the singer's subsequent records. The album's music blends folk, blues, jazz, and classical styles, signalling a radical departure from the sound of Morrison's previous pop hits, such as ' Brown Eyed Girl' (1967).