CAPTCHA performed by Buffalo Opera Unlimited.

Opera on Tap: iOpera explores music and technology with Robert Paterson’s CAPTCHA and Gabriel Kahane’s Twitterkreis and Craigslistlieder. Matt Marco serves as artistic director and pianist, with Joelle Lachance as director-in-residence.

Admission: $30. The program is open to all ages; Kahane’s pieces may not be appropriate for younger listeners.