How many letters does the top answer for “composer of erwartung” have?

The most common answer is schoenberg (10 letters).

Crossword clue: composer of erwartung

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

schoenberg 10 letters wd-fact-v3

United States composer and musical theorist (born in Austria) who developed atonal composition (1874-1951)

composer of q18345138 50% similar → mccreary

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composer of q58045522 50% similar → fox