A lyrical E-flat major piece in this genre is the first of seven by Johann Nepomuk Hummel. Charles Rosen used the “tinkling” sonority of a period instrument to explain its prominence in a set of works in this genre. The widow Rebecca Schroeter was the dedicatee of three pieces in this genre numbered 38 through 40, one of which is nicknamed for the use of verbunkos dance and other Hungarian effects in its Rondo finale. Three pieces in this genre comprise Beethoven’s Opus 1. A later Beethoven piece in this genre was nicknamed for an eerie slow movement that reminded Carl Czerny of the opening (-5[1])scene of Hamlet, while yet another is named for its dedication to Rudolph of Austria. For 10 points, (-5[1])Beethoven’s Ghost and Archduke (-5[1])are in what chamber genre that features violin, cello, (10[1]-5[1])and a namesake keyboard instrument? ■END■ (10[3]0[1])