That cover reminds me of Mother Goose - a New Zealand Band who moved to Australia in 1976 and had a #1 hit single with a novelty song called 'Baked Beans'.  They could really play. There's a live clip of them on youtube from 77. It goes from heavy blues to Zappa-ish prog to Chattanooga Choo Choo, all with the guitarist dressed in diapers and a bib.

Honestly? Here the cover of "Zones":

Just look at the drape of the pilot's suit. This was most definitely not drawn by an untalented 10 year-old; this was drawn by an artist who knew exactly what he was doing. Getting drapery right is one of the most difficult things in the art of painting.

I promise to listen to it ... there are a couple of those old things that I have not heard ... I need to find Tanned Leather and Cherubin ... I liked those and it was not the covers, btw.

The only "covers" i ever bought, for the most part were the ones done by HIPGNOSIS, and the main reason why was that their covers were ALWAYS an "editorial" about the music, and you just about knew what you were going to get. 

But, generally, covers were never the reason why I bought something ... in fact, I refused to buy the BLIND FAITH album with the young girl on it, because that cover was exploitative, and I did not think that the music was any better! But it's a fine line ... like seeing Jimi in the middle of a bunch of ladies in one album that was censored in America.

When comparing the "humor" from Brainstorm's album cover, to one by Frank Zappa sitting on the stool, at least you know that he is saying ... it's just some sh*t ... and he is not making any excuses for his thinking, while Brainstorm's is a bit on the weird side, even if it is making fun of the classical side of things ... but I'm not knowledgeable enough about underclothing to say any more about that ... I, personally, do not find it funny, or interesting and it did not help me buy the album or touch it, when AD2, KS and TD had something that was much more interesting and valuable to me!