Abstract: A composition tool including a memory capable of storing data and a processor is provided. The processor is configured for using the data such that the composition tool can provide a score interface and a plurality of instrument interfaces, wherein each instrument interface comprising a graphical representation of an instrument and a score section for illustration of at least one part of a musical score. The composition tool can provide a touch screen interface to enable a user to select a portion of the graphical representation of one of the instruments by detecting the user's finger placements on the selected portion of the graphical representation. The composition tool can, in response to the selection of the portion of the graphical representation, provide a representation of at least one musical note that is corresponding to the selected portion of the graphical representation of the instrument in the score section.