Brahms was a perfectionist so overwhelmed by Beethoven’s influence that it took him twenty-one years to complete his Symphony No. 1 in C minor, Opus 68.
My college music professor told me this story, and soon I’d embellished it with false details, for example that Brahms had been unable to perform in public until his fifties for fear of being accused of imitation. Years later I read a book that confirmed the influence of Beethoven but also noted that the Piano Concerto No. 1 in D minor was performed in 1859 when Brahms was 25.