Abstract: A musical device between one or more Musical Instrument Digital Interface (MIDI) controllers and one or more musical instruments comprises a housing and a plurality of potentiometers on a surface of the housing. A method of mapping music messages using a musical device is provided. The method includes defining a preset value corresponding to a frequency to be received within a MIDI message. Once a MIDI message having the frequency is received by the device, the device uses the data of the MIDI message and the preset value to create a new output MIDI message. The new output message is then transmitted to a sound module for producing a sound that differs from the sound that would have been produced from the MIDI message, had it been received.