Connellsville is the hometown of jazz trombonist harold betters, nicknamed mr.
British Dictionary definitions for trombonist
a brass instrument, a low-pitched counterpart of the trumpet, consisting of a tube the effective length of which is varied by means of a U-shaped slide. The usual forms of this instrument are the tenor trombone (range: about two and a half octaves upwards from E) and the bass trombone (pitched a fourth lower)
a person who plays this instrument in an orchestra
C18: from Italian, from tromba a trumpet, from Old High German trumba