Music that left a permanent mark right away:
Venus by Shocking Pink
Don't Let It Die by Hurricane Smith
Halle Hallelujah by Sidney Bechet and Claude Luter
Brainstorm by Hawkwind
Wolfpack, and Dominoes by Syd Barrett
21st Century Schizoid Man, and Moonchild by King Crimson
Shine On You Crazy Diamond by Pink Floyd
Ravel's Bolero
Beethoven's 7th Symphony, 2nd movement