challenge: What is notable about the Abbey of Echternach in the context of Luxembourg's music history?
  
  A. It was the birthplace of the famous Luxembourgish composer, Jean-Pierre Heiderscheid
  B. It was the location of the first music school in Luxembourg
  C. It was an important centre for folk music in the region
  D. It was an important centre for church music from the 8th century
  Answer: 