My brother is dexterous in playing trumpet is a brass instrument 
A trumpet seems like a difficult instrument to master.
jazz ensembles, as well as in popular music. They are played by blowing air through nearly-closed lips (called the player's embouchure), producing a "buzzing" sound that starts a standing wave vibration in the air column inside the instrument. Since the late 15th century they have primarily been constructed of brass tubing, usually bent twice into a rounded rectangular shape.
There are many distinct types of trumpet, with the most common being pitched in B (a transposing instrument), having a tubing length of
Celtic instruments Brass instruments The Celtic trumpet.
The Celtic trumpet was similar to the straight Roman "tuba" and probably came in different lengths. A Celtic musician is depicted playing the instrument on a late Greek vase. A related instrument could be the early mediaeval "Loch Erne" horn that was found in Ireland.
Other Celtic instruments Brass instruments Other brass instruments.
Many regional variants of the Celtic horns are known and came in different shapes, sizes and diameters, like the "Loughnashade Trumpa" from Ireland and similar horns from Scandinavia