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

The most common answer is weber (5 letters).

Crossword clue: composer of oberon

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

weber 5 letters wd-fact-v3

German physiologist who studied sensory responses to stimuli and is considered the father of psychophysics (1795-1878)

composer of q18345138 50% similar → mccreary

composer of q19413951 50% similar → nimri

composer of q20856802 50% similar → gosling, hurwitz

composer of q49740 50% similar → raine

composer of q58045522 50% similar → fox