Otello, Don José and Siegfried

• Barbershop parts
• Some male singers
• Choral section
• The Three ___ (former operatic trio)
• Candide portrayers
• Lohengrin and others
• Chorus section
• Pavarotti, Domingo and Carreras
• Courses of thought

Wiktionary Word definitions in Wiktionary
n. (plural of tenor English)