To celebrate the holidays, AKQA, the San Francisco/London-based digital creative agency, teamed up with members of the Pacific Chamber Symphony and Music Director Laurence Kohl to produce an interactive arrangement of “Carol of the Bells.” They are assisted by “shadow orchestra members” led by a “shadow conductor” who coordinates the performance by linking to Mobile Orchestra.com via wi-fi to get a unique web address. From there, up to 12 people may sync their smartphones, each choosing an instrument played by one of the real musicians. Once the “conductor” sees that all the mobile instruments are ready, he/she presses a key to let the music begin.