This microphone is good if you want to do an experimental recording of some resonating material without the ambient noise in your way, so it can be a very valuable tool if you're a sound designer. In my opinion it's not very good for recording violins, guitars etc in a studio, because the self noise is very high and the frequency response is not very linear. As a live reinforcement microphone it can feedback if pumped too high, so beware, but sometimes it helped me as second microphone to amplify double basses and saved the concert. Anyway, it's WAY better than a piezo for most applications. Note: the best adhesive to pair with this microphone in my opinion is called Blu Tak, made by Bostik.