Abstract: A keyboard apparatus for musical instruments such as pianos, organs, clavichords, and harpsichords, and methods for making and using the apparatus. The apparatus includes a frame assembly, a plurality of keys, a plurality of lever assemblies each operably connected with its corresponding key, and a main fulcrum that together replicate the touch of an acoustic piano keyboard. It can be used in electronic and acoustic instruments, can be adjusted to simulate the feel of a selected type of keyboard instrument, and is simple and cost-effective to manufacture.

Abstract: A keyboard apparatus for musical instruments such as pianos, organs, clavichords, and harpsichords, and methods for making and using the apparatus. The apparatus includes a frame assembly, a plurality of keys, a plurality of lever assemblies each operably connected with its corresponding key, and a main fulcrum that together replicate the touch of an acoustic piano keyboard. It can be used in electronic and acoustic instruments, can be adjusted to simulate the feel of a selected type of keyboard instrument, and is simple and cost-effective to manufacture.

Abstract: An adaptor module includes a graphical user interface having a video display and a touch responsive overlay. The graphical user interface displays graphical images representing parameters of an electronic musical instrument and generating control signals. A computer system is also included in the adaptor module for driving the graphical user interface. A music stand for supporting sheet material, wherein the graphical user interface forms part of the music stand. The graphical user interface can be mounted in an opening in the music stand and can provide a touch screen that is flush with the music support surface or recessed. The computer system is adapted for receiving signals from the electronic musical instrument.