Below are general call number ranges for Shelf Browsing.
M95-M99 Tuba alone
M264-M267 Tuba with piano accompaniment
M288-M289 Duets-- two wind instruments
M290-M291 Duets-- wind and string instruments
M1034.T8 Concertos with orchestra
M1035.T8 Concertos with orchestra (arranged)
M1134.T8 Concertos with string orchestra
M1135.T8 Concertos with string orchestra (arranged)
ML970-73 Books about the trombone
MT480-MT488 Studies and methods
MT486 Orchestral excerpts