The illuminated cello

It's a warm summer evening in New York City, and the visual artist Erika Harrsch is having dinner with Meric Adriansen, an engineer and managing partner of the lighting design company D3 LED. Adriansen's company specializes in sophisticated LED installations for advertising and public art. After dinner, the two stroll through Times Square, where Adriansen points out a few of his company's immense, shimmering creations and describes how the visuals are programmed.