The European research project Listen2Future started with 27 partners from 7 countries. It will develop acoustic MEMS transducer concepts building on new generation of piezoelectric transducers, an intelligent signal processing system, algorithms and customized packaging for performant, miniaturized and power/cost-saving systems. The aim of the project is to bring the smallest micro-electro-mechanical sensors into high volume production at globally competitive costs and make them available for a wide range of applications for industry and medicine. The research will yield higher image resolutions in ultrasound probes, robust mini-hearing aids with first-class sound quality and low energy consumption. The focus will also be on wearable ultrasound patches for early detection of heart disease and ultrasound devices for rapid infection control in infants. In industry, continuous quality control of materials and intelligent monitoring of the energy infrastructure are to be implemented.