He experimented with electronic keyboards and fusion during the '70's, then in the '80's got back in the groove with the Muse session Cap'n Jack.
Other musicians McDuff played with in the '60's and '70's include Joe Henderson, Pat Martino, Jimmy Witherspoon, David "Fathead" Newman, Rahsaan Roland Kirk, Sonny Stitt and Gene Ammons.
There are only a few McDuff sessions available on CD, though they include the fine sessions with Forrest.
His work with Benson has also been reissued on CD.
For soul and Jazz Funk fans, McDuff's period in the seventies and early eighties will endure with the releases 'Sophisticated Funk' and 'Kisses' on the Sugarhill label.