Clark Terry with George Duvivier, Dave Bailey, and Don Friedman. Liner notes by Nat Hentoff, produced by Bob Thiele. Impulse was an imprint of ABC Records: “The New Wave in Jazz . . . Feel It On Impulse!”

Love this:

What’s happening with Clark Terry is what some have called the life force. He digs being, he digs making music, he digs keeping himself open to possibility

Nat hentoff

The Varitone was a pickup and effects unit designed for woodwinds and brass – basically letting the player (on trumpet) play in two octaves at the same time – Terry was a endorser of the Selmer Company.