executant

from WordNet (r) 3.0 (2006)

executant
    n 1: a performer (usually of musical works)

from The Collaborative International Dictionary of English v.0.48

Executant \Ex*ec"u*tant\, n.
   One who executes or performs; esp., a performer on a musical
   instrument.
   [1913 Webster]

         Great executants on the organ.           --De Quincey.
   [1913 Webster]