primo

nouns

the principal part of a duet (especially a piano duet)

primo

is a part of

a musical composition for two performers

is a type of (narrower)

the melody carried by a particular voice or instrument in polyphonic music

"he tried to sing the tenor part"

the best of its kind

primo

is similar to

(superlative of `good') having the most positive qualities

"the best film of the year"; "the best solution"; "the best time for planting"; "wore his best suit"

domain usage

a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech