My virtual art piece, "IceOpal: A Virtual Interpretation of Amy Lowell's Poem 'Opal," is at the University of Western Australia's monthly 3D Art Challenge in the virtual world Second Life, along with 70 or so other entries. The UWA art sims are the happening places in Second Life these days, with the most interesting art and artists converging on them. There is a sim where the past monthly winners are on display for the year, as well, so it is a terrific place to see some of the best virtual art (although it certainly is not an exhaustive collection, and pieces are limited to 100 prims, so are small-ish in scale in that way, and do not include performance art, or the performing arts). Some pieces (including mine) have sound and also machinima or video.
Above are some still images of the scultpure, and here is the machinima that plays on the little sphere in front of the big sphere, but the video does not include the sound that an avatar hears within the sphere, other than the music in the video itself.
Slurl in Second Life, only for a few more days!