Wiktionary
first violinist
n. A violinist who is assigned to play melody (usually more technically difficult music).
Usage examples of "first violinist".
Only a first violinist, a Styrian called Teiser, took an interest in me and became my friend.
He had missed a full shift at the Twelve Sages Cafe but the first violinist had left him a message assuring him they had only hired a temporary replacement.
I was twenty-four when the war broke out, married, with a child and a first violinist with the Hague Symphony.
I come and the first violinist and the orchestra they are playing this concerto.
Laurence came out to find the first violinist having abandoned the orchestra entirely and playing snatches of various airs in a rather didactic manner for the dragons, demonstrating the work of different composers.