david li and google arts & culture presentplay four voices in cities around the world with the help of machine learningthis is an experiment using the latest web audio technology. it may not perform optimally on older devices.?

best answer
Blob Opera is a machine learning experiment by David Li in collaboration with Google Arts and Culture – now on tour! Opera singers use their voices as expressive and beautiful musical instruments. This experiment pays tribute to those voices as musical instruments anyone can learn how to play. Play four opera voices in real time.