ditty
noun /ˈdɪti/
  /ˈdɪti/
 (plural ditties)
 (often humorous)- a short simple song小曲;小调 - It reminds me of a little music-hall ditty my grandad used to sing.它让我想起了我爷爷过去常唱的一首小音乐厅小曲。 
 词源Middle English: from Old French dite ‘composition’, from Latin dictatum (neuter) ‘something dictated’, from dictare ‘to dictate’.
- It reminds me of a little music-hall ditty my grandad used to sing.