How much do we know about ancient Greek music? What was it like? Were there any musical groups that took the ancient Greek world by storm?

After playing Assassin's Creed Odyssey a lot more recently, I've been getting interested in ancient Greek music. I liked the little impromtu musical groups that popped in Athens and other cities, as the entire vibe that the music gave off too. I doubt that it is super historically accurate, though. So that brings me to my question. Do historians know a lot about ancient Greek music? Was it anything remotely comparable to our own music? Were there any Greek version of the Beatles or something?

Thank you for your time.