Related Clues:

• Soap or horse follower
• Serious hostilities
• In song, it's good for absolutely nothing
• Musical genre with its own glasses
• Type of hat or glasses
• 'Tha•s,' e.g.
• ''A Night at the ___''
• "Tosca," e.g.
• ''Einstein on the Beach,'' e.g.
• Word with glasses or buff
• Event at L.A.'s Dorothy Chandler Pavilion
• 'Tosca' or 'Thaïs'
• 'Rigoletto,' for one
• Work at the Met
• Concert performance