So, you know how some guitars have a long neck with strings on it and you play it by strumming or plucking the strings with your fingers? Well, a lyre-guitar is kind of like that, but it's also kind of different.
First of all, instead of having all the strings on one long neck, a lyre-guitar has multiple smaller necks attached to a rounded body. Each neck has just a few strings on it, and they are usually arranged in a way that makes it easier to play chords (which are a bunch of notes played together to make a nice sound).
Also, a lyre-guitar has a different shape than a regular guitar. It is kind of like a round or oval shape instead of being thin and flat. That's because lyre-guitars were invented a long time ago, when people used to play music in a different way than we do today. They wanted an instrument that was easy to play while standing up or moving around, and that's what the lyre-guitar was designed for.
Finally, the lyre-guitar has a very unique sound. Because of its special shape and the way the strings are arranged, it can make some really beautiful and interesting sounds that you don't hear on a regular guitar. It's a bit like a cross between a guitar and a harp (which is another kind of musical instrument with strings), and it's a lot of fun to play and listen to!