There are multiple artists recording under the name Ossia. 1. Ossia is Daniel Davies, a.k.a. DJ Oa$is, a member of Bristol's Young Echo collective. 2. Ossia is a student-run new music ensemble based at the Eastman School, University of Rochester, taking its name from the score marking that indicates a musical alternative. It produces concerts of contemporary music, and in so doing helps its student members learn the musical and entrepreneurial skills needed to mount successful performances.