Meaning: This sentence describes the atmosphere being filled with laughter, creating a joyous and harmonious ambiance.
Choice of Words: "Laughter" refers to the act of laughing, expressing amusement or joy. "Filled" means to occupy or make something full. "Air" is the mixture of gases that surrounds the Earth. "Like" is used to compare two things, and "music" refers to organized sounds that are pleasing to the ear.