I talked about it in previous posts, one of the main influencial people that shaped my musical taste was Klaus Schulze. Originally being a drummer, he played in the band Tangerin Dream, co-founded the band Ash Ra Temple, and later became one of the leading musicians in the avantgarde electronic music scene.
This track, "Crystal Lake", from his 1977 album Mirage, is just awesome even if the 40 year old recording is not matching todays standards. But I heard it played live at a concert when it just came out - just "wow!" is all I can say.
Disclaimer: This music is NOT SAFE with certain medication or when operating heavy machinery! :)
Have a nice flight!