Mortuis or Defunctorum?

[Wenceslas]

I am a painter and would like to give my latest work a Latin title. I am trying to say “Chorus Of The Dead.”  I get “Chorus Mortuis” and “Chorus Defunctorum.” I must say that I seem to prefer the sound of "Chorus Mortuorum." What would you suggest? Thank you. 

Edited August 30, 2019 by Wenceslas
Misspelled word