Fōkasu #50: Vangelis
Since it's an anniversary you have someone who is an absolute master of film music.
When I went to elementary school I found cassette which belongs my parents. It landed in my walkman and as soon as I heard the first sounds I was stunned.
I had no idea who was playing or singing. I had no idea what is the title of the album. All I knew was that my musical world had just changed.