This book documents in words and pictures the sound and light environments created by the Boston-area architect and musician Christopher Janney, a pioneer in the field of sound art and interactive architecture. Architecture of the Air shows how Janney transforms plazas, airport walkways, and other anonymous public spaces into intriguing shared events, using motion detectors, lights, colored glass, and carefully selected recorded sounds. Included is "HeartBeat," Janney's groundbreaking collaboration with Mikhail Baryshnikov, and a foreword by Beatles producer George Martin.