A method and apparatus for electronic control of a direct current motor is disclosed based upon a sensorless commutation technique using voltage vector analysis. In particular, in the illustrative embodiment one or more properties of a musical composition, such as tempo, volume, pitch, rhythm, etc. At least one energy storage device is included for engaging the vane and holding the sealing strips in sealing contact with the housing. Additionally, the clutch system can include a torque limiting system that permits slip when overall torque exceeds a preset limit.