How many letters does the top answer for “someone who plays a musical instrument (as a profession)” have?

The most common answer is instrumentalist (15 letters).

Crossword clue: someone who plays a musical instrument (as a profession)

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

instrumentalist 15 letters wn-def

someone who plays a musical instrument (as a profession)

musician 8 letters wn-def

someone who plays a musical instrument (as a profession)

play (a musical instrument) casually 50% similar → tootle