For his quirky, muscle-powered opus, Neraissance, avant composer Juraj Kojs relied on good old-fangled elbow grease to explore kinetic energy in an artistic context. As part of the Miami Light Project's Here & Now Fest at the Arsht Center this spring, the Slovakian artist combined human performers, experimental sound, and bleeding-edge analog and digital gadgetry in a rollicking 20-minute spectacle of stunning visual poetry that left spectators breathless with wonder. Kojs used two dancers on stationary bicycles to produce the energy to activate sewing machines, alarm clocks, fans, and strings of holiday lights for his dazzling multimedia extravaganza. Kojs, who is director of music and multimedia programming at Wynwood's Harold Golen Gallery and a postdoctoral associate at Yale's Department of Music, conjured a trance-inducing reverie in which a silver-winged fairy and a bride on a tricycle, who later peeled off her wedding gown as part of the surreal display, collided onstage for a performance that was both striking and unforgettable.