In the first movement of the fifth of these pieces, a solo marked senza stromenti lasts for about four minutes before the return of a ritornello that begins with pairs of sixteenth notes on “D, F-sharp, A, high D.” The third of these pieces begins with the fast violin pickup “G, (10[1])F-sharp, downbeat G.” (10[2])In most performances of the third (-5[1])of these pieces, (10[2]-5[1])its second movement is (10[2])an improvised keyboard (10[1])cadenza since the score (10[1])only contains two (10[1])chords. (10[7])The (10[1])last piece (10[1])in (10[1])this (10[1])collection features (10[1])two (10[1])viola (10[3])soloists, (10[2])while (10[1])its ripieno (10[1])group lacks violins. (10[1])This collection’s composer was hired by the Thomaskirche (-5[1])(“TOH-moss-keer-shuh”) after (10[1])it failed to earn him a job (10[1])with Margrave Christian (10[1])Ludwig, (10[2]-5[2])and its fifth entry (10[2])features flute, violin, and harpsichord (10[2]-5[1])soloists. (10[1])For 10 points, name these six concertos (10[5])by J. (10[1])S. (10[2])Bach. (10[4])■END■ (10[20]0[8])