Music archaeology is like a treasure hunt where people search for old musical things from a long time ago. Just like how we find old bones to learn about dinosaurs, music archaeologists find old instruments, songs, and music rooms to learn about how people used to make music a really long time ago.
Sometimes music archaeologists find very old musical instruments made out of things like animal bones or shells. They can also find old buildings that were used to make music, like special rooms that had good acoustics (which means the sound bounces around and sounds nice). Sometimes they might even find old songs written down on ancient paper!
By studying all of these old musical things, music archaeologists can learn about how people from long ago made music and what kind of music they liked. It's like a really fun adventure, like being an explorer in a movie, but with music!