The sixth of these pieces, in B-flat major, momentarily stops in the second half of its first movement and concludes with a fourth-movement adagio subtitled "La Malinconia."
The sixth of these pieces, in B-flat major, momentarily stops in the second half of its first movement and concludes with a fourth-movement adagio subtitled "La Malinconia." A later one, also in B-flat major, unusually contains six movements, including a fifth movement E-flat major Cavatina. Another of these pieces contains a third movement Adagio which alternates variations on a theme in the Lydian mode with variations on a faster theme in D Major, marked "Feeling new strength"; that movement, written after its composer had recovered from an intestinal disease, is titled "Heiliger Dankgesang." The Grosse Fugue was originally the final movement of the thirteenth of these pieces, and the seventh through ninth of them contain Russian themes in reference to their commissioner, Andrey Razumovsky. For 10 points, name this set of sixteen chamber pieces written by a deaf German composer.
The sixth of these pieces, in B-flat major, momentarily stops in the second half of its first movement and concludes with a fourth-movement adagio subtitled "La Malinconia."
Ludwig van Beethoven's String Quartets [prompt on partial answer]