My brother is dexterous in playing trumpet is a brass instrument 
A trumpet seems like a difficult instrument to master.
wWLL IT INVOLVES CONSTANT PRACTICE,Trumpets are used in art music styles, for instance in orchestras, concert bands, and jazz ensembles.
I bet!  I really don't know a lot about the instrument or who may be famous for playing it.
They are played by blowing air through nearly-closed lips (called the player's embouchure), producing a "buzzing" sound 
Sounds difficult, what else?
There are many distinct types of trumpet, with the most common being pitched in transposing  with valves of the piston