You would think that for all the mind enhancement of the 60s and 70s, that someone would have come up with songs referencing something a little more out of this world than Frankenstein and Godzilla (songs of which there are many). Granted, it's not quite all that bleak, but considering the vision-altering powers of some of those enhancements, I would have expected some rather wild monsters. That said, I'll have to note that there were many other-worldly album cover graphics that verge on the monstrous and were surely "induced".
My favorite go-to online dictionary provides the guidance that monsters do not necessarily have to be scary: defined as large, strange, horrible, uncontrollable. Large and strange - easy enough to envision. Horrible? Well, the dictionary says horrible is: very bad; causing fear, dread or shock... (Oh dear, now I need perspective on "dread", but I guess I have the picture...)
I waited until the last minute to post something partly because I thought someone else would bring up the classic "Thriller" monster (both as visual and commercial monsters)