primo tenore
/ˌpriːməʊ tɛˈnɔːri/ /ˌpriːməʊ tɛˈnɔːrɛɪ/noun
The principal tenor in an opera or opera company; a tenor of the highest rank.
Origin
Late 18th century. Apparently from Italian primo tenore (although this is apparently not recorded in dictionaries of Italian) from primo first + tenore.