Dit·ty n.; pl. Ditties
  1. A saying or utterance; especially, one that is short and frequently repeated; a theme.
     O, too high ditty for my simple rhyme.   --Spenser.
  2. A song; a lay; a little poem intended to be sung. “Religious, martial, or civil ditties.”
     And to the warbling lute soft ditties sing.   --Sandys.