“Beethoven would disagree. Listen to his Fifth Symphony. It is a phrase repeated endlessly.”
Although I never really liked Beethoven’s 5th very well, at least in comparison to the 6th (Pastoral), 9th symphonies, and most of his other compositions, I disagree somewhat with your comment on the phrase being repeated endlessly. The rythmic phrase is repeated, but the chords and even the intervals between the melody notes are changing on each repetition so that the “Da-da-da-dahhh” rythmic phrase begins with a downward major third interval, immediately followed by a downward minor third interval, and pretty soon the rythmic phrase is repeated with a downward semitone interval, etc.