From Wilfully Obscure:
Chemistry Set were a Seattle quartet who's only claim to fame was their inclusion on the rather well-known Sub Pop 200compilation album. If you have that record, you might be familiar with their contribution, "Underground," but if you were anything like me back in 1991 when it got reissued on CD, I was just stoked to have more Nirvana and Green River to jam out to, but I digress. The only biographical data I was able to unearth on Chemistry Set was this Google translation of a German Wiki-ish article that goes into their background and these records. Not terribly in depth mind you, but what it does cover is interesting.