Musical instruments; Ocarinas; Guitars; Harmonicas; Trumpets; Tambourines; Gongs; Lyres; Accordions; Harps; Violins; Music synthesizers; Violas; Flutes; Organs; Pianos; Drums [musical instruments]; Wind pipes for organs; Plectrums; Intensity regulators for mechanical pianos; Music stands; Cases for musical instruments; Stands for musical instruments; Music rolls [piano]; Bows for musical instruments; Bow nuts for musical instruments; Strings for musical instruments; Pegs for musical instruments; Catgut for musical instruments; Mutes for musical instruments; Dampers for musical instruments; Bridges for musical instruments; Harp strings; Chin rests for violins; Tuning hammers; Tuning forks; Perforated music rolls; Mouthpieces for musical instruments; Bass drum sticks; Kettledrum frames; Piano keys; Piano keyboards; Horsehair for bows for musical instruments; Drumsticks; Drumheads; Skins for drums.