New interfaces for musical expression are tools or devices that allow people to interact with music in new and exciting ways. For example, a person might use their body to make musical sounds instead of using an instrument like a guitar or keyboard. By using sensors and technology, people can create music with their movements or gestures, allowing them to express themselves in a whole new way. People can also use special machines or computer programs to write music, such as synthesizers or samplers. In this way, they can make a wide range of sounds and create entirely new pieces of music.