Source : Webster's Revised Unabridged Dictionary (1913)

Minstrelsy \Min"strel*sy\, n.
   1. The arts and occupation of minstrels; the singing and
      playing of a minstrel.

   2. Musical instruments. [Obs.] --Chaucer.

   3. A collective body of minstrels, or musicians; also, a
      collective body of minstrels' songs. --Chaucer. ``The
      minstrelsy of heaven.'' --Milton.

Source : WordNet®

minstrelsy
     n 1: a troupe of minstrels
     2: ballads sung by minstrels
     3: the art of a minstrel