precentor

from WordNet (r) 3.0 (2006)

precentor
    n 1: the musical director of a choir [syn: {choirmaster},
         {precentor}, {cantor}]

from The Collaborative International Dictionary of English v.0.48

Precentor \Pre*cen"tor\, n. [L. praecentor, fr. praecinere to
   sing before; prae before + canere to sing. See {Chant}.]
   A leader of a choir; a directing singer. Specifically:
   (a) The leader of the choir in a cathedral; -- called also
       the {chanter} or master of the choir. --Hook.
   (b) The leader of the congregational singing in Scottish and
       other churches.
       [1913 Webster]