In this video, we learn how to understand crescendo, diminuendo & other tempo changes. When you are playing piano, you are supposed to play the note until a dynamic change is shown on the music. A sforzando means that you must suddenly play very loudly. This occurs most in a surprise symphony. A crescendo is when you change the volume gradually. As the lines grow on the symbol you will increase the volume or decrease it if it's from larger to smaller. When you play dimiuendo you must not slow down, just like when you play crescendo. Use these tips to help you play these changes better and become a better piano player!