SOTU 484- "MOUNTAINS OF THE MOON" - Grateful Dead (1969) So, Alan Turing brings to mind "Enigma" (thanks, Del) and this song is certainly enigmatic. Written by Robert Hunter and Jerry Garcia it appeared on the Grateful Dead's album "Aoxomoxoa". The original version has a medieval feel with Garcia playing acoustic guitar and keyboard player Tom Constanten providing a harpsichord effect. The song is "riddled" with references. The "Mountains Of The Moon" are a mountain range in Africa reputed to be the source of the Nile, but it's unclear if that's what the song is referring to directly. There are also references to Electra, laurels, fairy Sybil,TomBanjo, the Carrion Crow and the Marsh King and his daughter - so there you go! Amusingly, there is a video on YouTube of the Dead's '69 appearance on the "Playboy After Dark" TV show where Garcia hobnobbs with Hugh Hefner before performing a very nice version of the song.