Okay kiddo, so kobza is a musical instrument that people play by strumming or plucking its strings. It's kind of like a guitar, but with a slightly different shape and sound.
A kobza has a long, slender body that's usually made out of wood. It has a flat top and a rounded bottom, kind of like a big teardrop. If you look at it from the side, it looks like a long oval.
On the top of the kobza, there's a hole called a sound hole. This helps the sound of the strings to travel out of the instrument and be heard better.
Now, when you want to play a kobza, you hold it against your body and use your fingers to press down on the different strings. Each string makes a different sound, so when you strum or pluck them in a certain way, you can make all kinds of beautiful music.
Kobza is a really important part of traditional Ukrainian music. People have been playing this instrument for hundreds of years, and it's still used today in lots of different types of music. So if you get a chance to hear someone play a kobza, be sure to listen closely – it's a really special instrument!