Misha Mengelberg was a Dutch jazz pianist and composer. A prominent figure in post-WWII European Jazz, Mengelberg is known for his forays into free improvisation, for bringing humor into his music, and as a leading interpreter of songs by fellow pianists Thelonious Monk and Herbie Nichols.
From Wikipedia (https://en.wikipedia.org/wiki/Misha_Mengelberg) under Creative Commons Attribution CC-BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0/legalcode)