The Stanford Mobile Phone Orchestra (MoPhO) is a new repertoire-based ensemble using mobile phones (e.g., iPhones) as the primary musical instrument. Far beyond ring-tones, MoPhO's interactive musical works take advantage of the unique technological capabilities of today's hardware, transforming multi-touch screens, built-in accelerometers, built-in microphones, GPS, data networks, and computation into powerful and yet mobile chamber meta-instruments.

MoPhO was instantiated in 2007 at CCRMA, Stanford University, by faculty member Ge Wang, Deutsche Telekom senior research scientist Georg Essl, and visiting CCRMA researcher Henri Penttinen, with CCRMA Artistic Coordinator Chryssie Nanou, 2007-2008 MA/MST students, and generous support from Nokia. MoPhO performed its first public concert in January 2008.