DUET

[ Tuning apparatus for musical instruments; ] musical instruments; oboes; [ ocarinas; ] clarinets; [ strings for musical instruments; saxophones; mutes for musical instruments; dampers for musical instruments; cymbals; piccolos; tubas; recorders being musical instruments; glockenspiels; trumpets; trombones; harmonicas; drumsticks; flutes; horns; mouthpieces for musical instruments; xylophones; bows for musical instruments; cases for musical instruments; chin rests for violins; shoulder rests for violins and violas; foot pedals for musical instruments; stands for musical instruments; keyboards for musical instruments; sheet music stands; conductors' batons; tuning forks ]