diva (n.)

• alto
• baritone
• bass
• basso
• canary
• cantor
• caroler
• chanter
• chantress
• contralto
• countertenor
• crooner
• headliner
• hero
• heroine
• lead
• mezzo-soprano
• principal
• protagonist
• singer
• songbird
• songster
• songstress
• soprano
• star
• superstar
• tenor
• vocalist
• vocalizer
• voice
• warbler