We present the integration of two musical interfaces into a new music-making system that seeks to capture the expe-rience of a choir and bring it into the mobile space. This system relies on three pervasive technologies that each support a different part of the musical experience. First, the mobile device application for performing with an artificial voice, called ChoirMob. Then, a central composing and conducting application running on a local interactive display, called Vuzik. Finally, a network protocol to synchronize the two. ChoirMob musicians can perform music together at any location where they can connect to a Vuzik central conducting device displaying a composed piece of music. We explored this system by creating a chamber choir of ChoirMob performers, consisting of both experienced musicians and novices, that performed in rehearsals and live concert scenarios with music composed using the Vuzik interface.