This album was recorded at the Montreux Jazz Festival in Montreux, Switzerland in June 1969. Both the Eddie Harris Quartet and the Les McCann Trio performed with great success at the Festival. Later in the week, Eddie and Les felt like playing together. The great American trumpet player, Benny Bailey, who has been living in Europe for several years, was also at Montreux, and he was asked by Eddie and Les to join them in the impromptu jazz concert which can be heard on this album.