challenge: What is the origin of the term 'Andalusī nūbah' in reference to the music genre?
  
  A. The name of a traditional North African instrument
  B. The Arabic word for 'music' or 'song'
  C. The practice of a musician waiting behind a curtain to be told it was his turn
  D. The name of a famous musician from the Maghrib states
  Answer: 