For 10 points, name this Baroque composer of The Art of the Fugue and Goldberg Variations, as well as six pieces named for a German state, the Brandenburg Concertos.
One work by this composer features three characters; one whose name literally means "stick in the mud," Lieschen, is addicted to the titular substance. This composer of the Coffee Cantata composed a piece rediscovered and conducted by Felix Mendelssohn, "St. [*] Matrhew's Passion," and a collection which contains 24 preludes and fugues, one in each key, The Well-Tempered Clavier. For 10 points, name this Baroque composer of The Art of the Fugue and Goldberg Variations, as well as six pieces named for a German state, the Brandenburg Concertos.
One work by this composer features three characters; one whose name literally means "stick in the mud," Lieschen, is addicted to the titular substance.
{Johann Sebastian Bach} [do not accept “Johann Christian Bach” or any of Bach's other composer relatives; prompt on just “Bach”]