From the Tangerine Dream Facebook page:
"Edgar Froese 6 June 1944 – 20 January 2015
His son Jerome made the following announcement - Dear friends & colleagues, the Captain has left the ship ... I'm very sorry to inform you that my father Edgar Froese passed away on Tuesday afternoon (20th of January) in Vienna. And as you already know: Life plays no encores. Rest in peace Edgar, you will be sadly missed. RIP"
Suffice it to say, but TD were my introduction to electronic music, and Edgar was indeed, the captain of that ship. A true progressive, in every sense of the word.