About Us

Reverse Osmosis A Cappella, or RO, is one of USC’s premiere co-ed a cappella groups. Our repertoire extends from indie to oldies to rap, and we strive to reflect the vast diversity of music within each performance. Since our founding in 2001, we have committed to providing musicians with a safe, fun, and inclusive space to build community through the love and practice of music–a point that is beautifully reflected in our work. We are “the purest sound on campus".