 Steve Trounde from AVA Ballet Theater. We also heard from Alexander Van Alstyne, the company's artistic director and choreographer. Vortex, The Ballet That Rocks, is presented Friday and Saturday starting at 8.30 p.m. at the Robert Z. Hawkins Amphitheater inside Bartley Ranch Regional Park in Reno. Both performances are free, no advance tickets, first come, first served, with doors opening at 7 p.m.