SL ISO - Second Life International Symphony Orchestra is the first virtual symphony orchestra that was founded by Fly Kugin, SL ISO Artistic Director, in Second Life, a virtual world.

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SL-ISO performed its first concert on Second Life stages in August 28th, 2022. The orchestra members are volunteered actor-avatars who like to attend a musical journey and add their contributions as being a resident in Second Life. 

As a part of repertoires and concerts featuring symphonic works and backing tracks with Second Life's talented live musicians, SL-ISO aims to provide a real music experience to the audience by creating a real life concert type atmosphere, as well as providing a visual feast for Second Life listeners.