Lucy in the Sky with Diamonds
Elton John made this song famous (1975) but originally done by the Beatles (1967).
__L__ucy in the __S__ky with __D__iamonds references LSD, a powerful psychotropic drug that was popular in the 60's and 70's and caused users to "trip" and hallucinate.
I believe LUCY also stands for Lucifer and this dig is deep.
Will attempt to provide moar later- life very busy today so leave this for Anons to discover on their own.
Also pictured here, EIN's Lucy in the Sky with Diamonds. WOW.