A musical instrument apparatus including multiple parallel strings defining a string line and a keyboard overlay positioned at an acute angle to the string line to allow for consistent playing feel by consistently positioning the hammers on the keys while allowing large key spacing with minimized distance between the strings. This invention also relates to a corresponding computer program and corresponding licensing system. The direct metering of the valve to the injectors eliminates the need for additional shut off valves, and if used with a combining valve having an integral distributor section metering fuel to multiple injectors, the need for a separate flow divider is also eliminated. The size and configuration of the basket may vary depending upon the application, and the unit may be configured to receive templates for the customized storage of particular items such as drilling tools, bits, etc.