A rare live recording of Miles Davis performing with his septet in 1971 will finally be released this summer by Sleepy Night Records.

The Lost Septet is the second release in the record label’s trilogy of previously unheard Miles Davis recordings that began last year with The Lost Quintet.

Captured at the Wiener Konzerthaus in Vienna, The Lost Septet features Davis accompanied by Gary Bartz, Keith Jarrett, Michael Henderson, Ndugu Leon Chancler, James Mtume Foreman and Charles Don Alias.

Davis toured Europe with this septet in 1971 — during his controversial, rock-oriented fusion era — but he never recorded with them in a studio. This concert was only previously broadcast on the radio.