Finale of the Music Series Mystery Cache

This is the final cache in a series of caches I recently put out related to classical music. To solve the puzzle, you will need to have found the five caches below:

Each of these caches has a number written on the outside of the container. Below is how you get the coordinates to the final.

Alert: You are about to download a file in order to obtain further details needed to find this geocache. As the cache owner, I represent that this file is safe to download although the files needed to complete this geocache have not been checked by Groundspeak or by the Geocache Reviewer for possible malicious content. As a result, you are downloading this file at your own risk.

A = The number written on Köchel's Revenge (GC193R8)

B = The Köchel number of this piece

C = The number written on Chamber Pot (GC21R4G)

D = Mahler's 8th. (It's about as far from chamber music as possible, but the idea is sort of similar to that in "Chamber Pot.")

E = The number written on Study Your Chopin (GC21QXT)

F = The opus number of this piece by Chopin.

G = The number written on The Art of Transcription (GC22F4C)

H = The symphony number of the excerpt below. The finest (and most difficult to play) example of music transcription might be Franz Liszt's arrangements of Beethoven's nine symphonies. This excerpt is from one of Liszt's transcriptions.

J = The number written on Excerpts From the Geocaching Sonata (GC23PDX)

K = The number of flats that would exist in the key of B double flat major

45 degrees 00.(B-A-C-E-F-K-1)
93 degrees ((((B+K)/G)*(F+(H*C)))+B+J+F)/D

Extra credit for finding "Pycck|/|e KoMno3|/|Topbi" (GC23VQ1). That puzzle had a different purpose and was not intended to be part of this series.

The containers for the first five caches in the series weren't that interesting, so I attempted to make this container unique. Hopefully, it is also appropriate to the theme of the puzzle series. Please replace the cache as found.