...who wrote those jingles for that cheap rip-off soda company?

You know:

Shasta cola hits the spot
Ties your belly in a knot
Tastes like vinegar
Looks like ink.
Shasta cola is a stinky drink!

That Shastakovich?

--Actually, great post, with a wonderful trip down memory lane. And the lyrics above are ripped off from Woody Guthrie who in turn ripped them off a once-famous Pepsi ad.