About:
Dennis O'Neill is a Welsh operatic tenor and recording artist.

• Known For
• 
  Die Fledermaus
  as
  Alfred
• 
  Der Rosenkavalier
  as
  Sänger
• 
  Mefistofele
  as
  Faust
• 
  Aida
  as
  Radames
• 
  Verdi: Macbeth
  as
  Macduff