How can a musician effectively incorporate accelerando and ritardando into their performance to enhance the dynamic and emotional impact of the music?

A musician can effectively incorporate accelerando (gradually speeding up) and ritardando (gradually slowing down) into their performance by carefully adjusting the tempo of the music at specific points. By using accelerando, the musician can build excitement and intensity, while ritardando can create a sense of anticipation or drama. These techniques can enhance the dynamic and emotional impact of the music by adding variety and expression to the performance.