A method for simultaneously adjusting camshafts of different cylinder banks of an internal combustion engine to a predetermined nominal angle relative to a crankshaft, where the camshafts actuate associated intake or exhaust valves of the corresponding cylinder banks of the internal combustion engine. The streams may be in a form utilizing a first transmission protocol and destined to a remote destination. The system and method enable a user to learn to associate selected pieces of music with corresponding facial expressions, practice the learned associations, and play chosen pieces of music based upon the learned associations. The mating array is moveable in the mating direction to couple the terminal with a mating terminal of the second circuit board. Therefore, the loop current of the OP amplifier can be reduced or eliminated.