Ok kiddo, imagine a really big guitar without a body. That's called a Celtic harp! It's sometimes also called a lever harp or folk harp.
The Celtic harp is a traditional instrument that has a very long history. It dates back more than 2,000 years and was first played by people who lived in Ireland and Scotland. It's called a Celtic harp because it's often associated with the music and culture of the Celts, who were a group of people who lived in Europe a long, long time ago.
One thing that makes the Celtic harp special is that it's played with your fingers instead of with a pick like on a guitar. The strings on the harp are made of metal or gut (animal intestines), and each one makes a different sound. You use your fingers to pluck the strings, and you can play one string at a time or several at once.
Another special thing about the Celtic harp is that it has little levers that you can use to change the pitch of the strings. This means that you can play lots of different notes on just one string! There are usually between 26 and 34 strings on a Celtic harp.
The sound of a Celtic harp is really beautiful. It's very peaceful and calming, and it makes you feel like you're in a magical fairy tale. People still play the Celtic harp today, and it's often used in traditional Irish and Scottish music.
So that's the Celtic harp, kiddo! It's a very special instrument with a long history and a beautiful sound. Maybe someday you'll get to hear one in person!