Re: Would a piezo pickup work well for a violin/viola?
It might be out of your price range (it's definitely more than $69), but my g/f is a serious violin/viola player and swears by The Band by Headway through a clean tube amp. She tried everything from a Fishman bridge mounting pickup to a stick-on transducer to an LR Baggs bridge pickup and The Band beats all of them. It provides the best clarity and response of anything else she has ever used. And, it doesn't require permanent installation, which is a huge benefit.