WordNet (r) 3.0 (2006):

balladeer
    n 1: a singer of popular ballads [syn: crooner, balladeer]

Moby Thesaurus II by Grady Ward, 1.0:

44 Moby Thesaurus words for "balladeer":
   arranger, ballad maker, ballad singer, balladist, balladmonger,
   bard, composer, contrapuntist, ethnomusicologist, fili,
   folk singer, folk-rock singer, gleeman, harmonist, harmonizer,
   hymnist, hymnographer, hymnologist, jongleur, librettist,
   madrigalist, melodist, melodizer, minnesinger, minstrel,
   musicographer, musicologist, orchestrator, rhapsode, rhapsodist,
   scop, scorer, serenader, song writer, songsmith, street singer,
   strolling minstrel, symphonist, tone poet, troubadour, trovatore,
   tunesmith, wait, wandering minstrel