Many of Grant's recordings were not released during his lifetime. These include McCoy Tyner and Elvin Jones (also part of the Solid group) performing on Matador (also recorded in 1964), and several albums with pianist Sonny Clark. In 1966 Grant left Blue Note and recorded for several other labels, including Verve. From 1967 to 1969 Grant was, for the most part, inactive due to personal problems and the effects of heroin addiction. In 1969 Grant returned with a new funk-influenced band. His recordings from this period include the commercially successful Green is Beautiful and the soundtrack to the film The Final Comedown.
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