We had to choose from a list of 800 pieces, some famous, some obscure, some light, some very dark and deep indeed, like the Quartet for the end of time by Messiaen (#24) or Faure's Requiem(#3!).
I challenged myself in casting a vote, and my five choices made it to the final list.
Here it is:
at #71: Boieldieu Concerto for harp and orchestra
at #16 : Saint-Saens Danse Macabre
at #11 : Debussy Suite bergamasque
at # 7 : Berlioz Symphonie fantastique
at # 5 : Eric Satie Gymnopedies
The top 3 were:
Saint-Saens "Organ" Symphonie
Here is the link to the complete list and listening extracts: