<P> The Concertmaster ( from the German Konzertmeister ) is the second-most significant person in an orchestra , symphonic band or other musical ensemble after the conductor or director . Another common term in the U.S. is `` First Chair . '' In the U.K. , the term commonly used is `` leader . '' </P>
who is the only member of an orchestra who has the music for all the instruments
Concertmaster