harmoniser

Noun harmoniser has 2 senses

• harmoniser(n = noun.person) harmonizer - a musician who sings or plays in harmony;
is a kind of instrumentalist, musician, player
Derived form verb harmonise₃

• harmoniser(n = noun.person) harmonizer - a mediator who brings one thing into harmonious agreement with another;
is a kind of go-between, intercessor, intermediary, intermediator, mediator
Derived forms verb harmonise₅, verb harmonise₄