Technically it was a present rather than bought myself, but was what I wanted, so almost the same thing. In the late '60s as a little boy I was fascinated by the Apollo landings and wanted the signature tune, which I understood to be The Planets, especially given this album cover.
Of course, the signature tune wasn't The Planets at all but Richard Strauss Also Sprach Zarathustra which I didn't get till decades later. Planets is still pretty damned good, and was perhaps the begining of my exploration of (so-called) Classical music