Controlling device of music bell in the pearl box

Controlling sharing of files by portable devices

Controls for musical instrument sustainers

Converter for guitars

Convertible drumhead

Convertible drumhead

Convertible musical instrument

Convertible tremolo apparatus for stringed musical instrument

Cooperative musical instrument

Cord tuning mechanism for guitar

Cordless electric guitar

Cordless guitar transmitter

Core material of string for instruments and string for instrumen

Corrective device for clarinets

Counter pressure system for stringed instruments

Coupling device for clamping more cymbals

Coupling unit for a woodwind

Cover and lock for keyboard of an electronic organ

Cover for a musical instrument

Cover for stringed instruments