The Head pressbook was issued to newspapers and other exhibitors as a promotional tool
and contained info on who stared in the film, multiple variations of the film posters, newspaper ads,
ready-made notes that could be placed as is into newspapers, and a couple ideas
for bizarre exploitation campaigns, giveaways and listings, etc.
Here is an excellent annotated page for this pressbook.
Page 10 lists all their LPs and singles (except "A Little Bit Me, A Little Bit You")
"Porpoise Song/As We Go Along" had been released in October but the Head soundtrack was
delayed due to the mylar cover, which pushed the LP release back to December 1.