Absolutely Free (song) which is explained by Zappa in the spoken introduction to the song ("The first word in this song is discorporate. It means to leave your body"). "Discorporate" plays heavily in Robert Heinlein's science fiction novel "Stranger in a Strange Land", which was very popular among hippies and provided the muse for several songs by Jefferson Airplane. The lyrics also reference the song "Mellow Yellow" by singer-songwriter Donovan, who is often associated with the hippie movement ("The dreams as they live them are all mellow yellow"). On some pressings of the album, especially on earlier releases, two lines of the lyrics
The Yellow and Blue the end of a long life, he wrote: "It has always been a great joy to me, revisiting Ann Arbor, to hear the song still sung in fraternity houses, and on the campus in the twilight. I have heard it in mid-ocean, on the streets of Florence and Rome, and hither and yon as I have traveled about the world. A song written in the days of one's youth, if it by good luck expresses the emotion and enthusiasm of succeeding generations of young men and women, is a thousand times more worthwhile than many books of learning." The Yellow