How many letters does the top answer for “united states jazz composer and piano player and bandleader (1899-1974)” have?

The most common answer is ellington (9 letters).

Crossword clue: united states jazz composer and piano player and bandleader (1899-1974)

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

ellington 9 letters wn-def

United States jazz composer and piano player and bandleader (1899-1974)