The O+ Festival (pronounced oh positive) is a volunteer-run celebration of art, music, and wellness held annually in Petaluma, Calif, Kingston, New York, and Chicago, Illinois. Participating artists, musicians, and volunteers exchange their contributions in return for wellness services from art-loving doctors, dentists, and other local practitioners. In short, it's a system of exchanging services that are core to well-being for concerts and lasting public art. O+ hopes to unite local businesses, residents, artists, musicians, and wellness practitioners by strengthening the fabric of the community with vibrant lasting works or art.