Page "Van Dyke Parks" Paragraph 9

The bitter resistance from the group and their record company had a strong negative effect on Wilson's increasingly fragile mental state ( which may also have been exacerbated by drug use ).

Following a December 1966 recording session in which he was involved in a heated argument with Mike Love ( who vehemently criticized his lyrics for the song " Cabin Essence ") Parks ' involvement in SMiLE effectively ceased and he officially withdrew from the project in early 1967.

Recording sessions ground to a halt soon after, as Wilson became increasingly withdrawn, and the album was shelved a few months later.