Bror Fredrik "Esbjörn" Svensson was a Swedish jazz pianist and founder of the jazz group Esbjörn Svensson Trio, commonly known as e.s.t.
Svensson became one of Europe's most successful jazz musicians at the turn of the 21st century before his death, at the age of 44, in a scuba diving accident.
From Wikipedia (https://en.wikipedia.org/wiki/Esbjörn_Svensson) under Creative Commons Attribution CC-BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0/legalcode)