Avant-garde music is like playing with musical toys in a new and creative way. Imagine you have a toy piano and instead of playing normal songs, you try to make weird and interesting sounds by pressing the keys in unusual patterns. That's what avant-garde musicians do with all sorts of different musical instruments and sounds.
Avant-garde musicians like to experiment with different types of music and sounds that other people might not have ever heard before. This can include things like using strange instruments, making unusual rhythms and melodies, and even using tools and objects that aren't normally used in music to create sounds.
Some people might not like avant-garde music because it can sound very different from traditional music. But other people might enjoy it because it's exciting and new. Avant-garde musicians are always trying to push the boundaries of what is considered music and what sounds can be made. So if you ever feel like playing with your toys in a new and interesting way, you might be a budding avant-garde musician yourself!