2010 two CD set containing all surviving music from a never before heard performance by the 1969 Miles Davis Quintet, with Wayne Shorter, Chick Corea, Dave Holland and Jack DeJohnette. It was taped at the Blue Coronet Club in New York in June of that year, before the group embarked on a European tour. Miles remembered this group in his autobiography as really a bad motherf***er. These recordings are welcome considering that this exact formation of the quintet never made a studio recording.