Transact SQL :: Extracting From 3 Related Tables And Including MAX Function

I have these 3 tables in a database for printed chamber music works:

Table INSTRUMENTS: List of musical instruments
    Column ID          -- int, primary key
    Column sInstrument -- string

Table PTRS_INSTRUMENTATION: 
    Column ID          -- int, primary key
    Column lInstrument -- int, points to a row in table INSTRUMENTS via ID
    Column lMainItem   -- int, points to a row in table MAINITEMS via ID
    Column lInstrSeqNum -- int, sequential number of like instruments within one Main Item
    
Table MAINITEMS: List of chamber music works
    Column ID          -- int, primary key
    Column sItem       -- string
    
Each chamber music work (Main Item) requires an ensemble of musicians playing several instruments. Some of them may be the same, such as 2 violins. A classical quartet, for instance, consist of 2 violins, 1 viola and 1 cello. I am concerned here only with one of the instruments (although it may occur several times).

I want to extract a list of Main Items where the instrument is given (e.g., 'violin'),

And the maximum of PTRS_INSTRUMENTATION.lInstrSeqNum is a given number (e.g., 2).