u/Advanced-Leopard5936

Might not be the best place but I was wondering if anyone with any sound knowledge would have any advice for a project I'm thinking off. I would like to create a large microphone of resonant pieces and shapes of metal which are then attached to a base which uses piezo discs to actually collect these sounds and make them audible. Does anyone know what kinds of shapes are the most resonant and would work the best at capturing higher sounds such as birdsong or have any tips in this process? Would it work?