At bar 23, Beethoven utilizes metric ambiguity to hammer out the first of many passages depicting struggle. You will recall, this movement is in 3/4 time. Up till now, the meter has been in threes with a natural accent on the first beat...1-2-3 1-2-3. By having the orchestra play sforzandos on alternating beats, the meter is forced into a two step rhythm...1-2-3 1-2-3 1-2-3 1-2-3 followed by 1-2-3 1-2-3. Therein lies the ambiguity, a forceful double meter superimposed on a triple meter. The resulting conflict of metric
emphasis provides the sense of struggle. |