Abstract: A projector containing a group of eigth film cassettes which are selectively slidable into a position between a lens and an electric light so to project an image upon a screen upon a front side of a case that contains the entire device, the film cassettes containing micro file upon which sheet music is photographed so that the cassettes contain a large library of sheet music, and the case being adaptable for placement upon a piano or in front of a musician playing any other instrument.