Aerva brought interactivity to the Xconomy Battle of The Tech Bands, which took place at the Middle East on January 22. As musicians from Boston's leading tech companies battled it out, attendees picked their favorite band using Aerva's MoApp service. Concert-goers interacted with the screen by posting messages via AerChat and shared their photos real time via Pic2Screen. Click below for pictures of the event, or visit the Flickr gallery