Next Saturday's your last chance to see Rafael Lozano-Hemmer's light and sound installation, Voice Tunnel , for Summer Streets. The experience is disarming and a little chaotic, with a chorus of recordings made by visitors being piped from 150 speakers that ring out in time to flickering arches of light. Still, it's well worth stopping by; afterward, head uptown to the Guggenheim for more light works at the museum's James Turrell show.
