A piece of material is assigned a call number according to the Library of Congress Classification Outline. Class M is for music. Below are some of the most useful call numbers to know.
Solo with piano:
Two wind instruments: M288-289
One wind and one stringed instrument: M290-M291
One wind and one plucked instrument: M296-297
Piano trios: M315-319
Wind trios: M355-359
Brass trios: M357.4
Wind quartets: M455-459
Wind quintets: M555-559
Solo instrument with orchestra:
Wind instrument techniques: MT339-533
Systems and methods: MT20-34
Did you know that there are two different interfaces to search the UMD catalog?
There is this Worldcat interface that you are probably familiar with:
And there is the "Classic Catalog" interface:
In order to search by call number and browse items that are on the shelf electronically you will need to use the Classic Catalog.
By using the Classic Catalog you can immediately narrow your search to call numbers:
Here is what the search results look like when searching the call number range M237-238: