This multimedia course will celebrate the expressive power of voices coming together. With greater depth and a wider lens than this previous Osher Online course, we will trace how vocal groups have shaped music for nearly a thousand years. We will explore duos, trios, quartets, and larger ensembles across genres, from sacred chant to jazz, pop, rock, R&B, and beyond. We will celebrate iconic performers, unexpected connections, and how their legacies live on through contemporary groups.