David Yow has been in these bands:

Here is another Scratch Acid link

Here is yet another Scratch Acid link

Here are some Scratch Acid pictures

Suck Your Mothers Dick

Toxic Shock

A guest on the Pigface album "Gub"-- The Bushmaster & Bushmaster Bushmaster Remix (David Yow:vocals?)

He also sidled up real close to Helmet to sing on "Custard Pie"for the Led Zeppelin tribute album, Encomium