I haven’t partaken in any cannabis for decades, but if I did take that gummy, it certainly wouldn’t be just one song on my menu.
It lasts for hours, after all...
So, I would have full buffet of songs lined up.
Among my choices would be:
Yes - Close to the Edge
King Crimson - Larks Tongue in Aspic, Red, Starless and Bible Black
Mahavishnu Orchestra - Inner Mounting Flame, Lost Trident Sessions
The Contortionist - Language
Eberhard Weber - Colours of Chloe
Pat Metheny and Lyle Mays - As Falls Wichita, So Falls Wichita Falls
PFM - Per un Amico
Gong - Gong's "Flying Teapot" trilogy is pretty much designed to accompany this sort of experience.
And since I wasn’t into contemporary, atonal and avant-garde classical music back in the days when I did partake, I would certainly line up some choices from this, too.
I would expect the overall complexity of this stuff to benefit from being under the influence.
Such as:
Elliott Carter - Concerto for Orchestra (1969), Piano Concerto (1965), or many more
Charles Wuorinen - 4th Piano concerto (2003), Iridule for oboe and six players (2006)
Or Bruno Maderna, Joan Tower, Unsuk Chin, Magnus Lindberg, and others.