Answer: primos

AnswerCrossword Clue
PRIMOSPiano duet parts
PRIMOSLead duet player's parts
PRIMOSUpper parts of piano duets
PRIMOSCarnera et al.
PRIMOSLeading singers of groups
primosthe part of a piano duet played on the upper half of the keyboard
primoshighly valuable or most essential
primosfirst-class
primosPRIMO, the main part in a musical piece, also PRIMA
primosthe first or leading part in an ensemble