Imo, Vangelis brought the synthesizer from an experimental novelty to an instrument for composition. The two sounds I associate with him are the long brassy triangle with a steep envelope that we know from both Blade Runner and the accompaniment to the piano in the Chariots of Fire theme, and his effective use of chimes.

I have tickets for Olafur Arnalds next week, and there is a younger generation of composers like Arnalds, Frahm, Richter, Tiersen, Aphex/James, and even Reznor/Ross, who could not have avoided Vangelis' influence marrying the synth with classical techniques. He was a big part of what inspired me to start making synth music and more than a few of my tracks have homages to his work, and this note triggered a memory of playing the Chariots theme on piano as a really young child and it seemed to be everywhere at the time. A loss, but hard to mourn such an exceptional contribution as well.