Jim Gwinn, who has worked at Conn Selmer for 11 years, buffs a Vincent Bach trombone at the factory in Elkhart, Indiana last month. An irony of the trumpet is for all the care and precision that ...

Elkhart-based instrument maker Conn Selmer's family of brass instruments were part of Usher's halftime performance. The trumpet and trombone were specifically made for some people performing in ...