The phrase "catchy music" refers to a type of musical composition that is memorable, lively and engaging. It has an easily recognizable melody or rhythm that sticks in one's mind and is often associated with popular songs that are widely known and enjoyed by many people. The term can also be used to describe music that is energetic and upbeat, making it difficult for listeners not to move or tap their feet along to the beat. In essence, "catchy" music is infectious in nature, leaving a lasting impression on those who hear it.