Possible Clues:

• ''Carmen'' and'' Salome''
• Puccini specialties
• "Stiffelio" and "Don Carlos"
• ''Carmen'' and ''Elektra''
• Nabucco and Tosca
• London Coliseum shows
• Met fare
• Some shows work, at times
• Shows medical procedure a number of times
• "Carmen" and "Norma"