In the summer of 1999 Leonardo Silva and Peter Hollens met in a University of Oregon writing class. Their common passion for singing inspired them to start a vocal group. That winter, Pete and Leo gathered a small and talented group of 6 music lovers for their very first rehearsal. On the Rocks was born. Known as the first official collegiate a cappella group in Oregon, On The Rocks began a tradition of excellence in a genre that was previously unheard of in the Northwest.