A "single" in music refers to a type of release that typically features one main song, which is often intended for radio play or promotion. Singles can be standalone tracks or part of an upcoming album, and they may include additional content like remixes or B-sides. They are commonly used by artists to generate interest and anticipation for their full-length projects. Singles are an important part of the music industry, as they help gauge audience response and can significantly impact an artist's popularity. Successful singles often lead to increased sales and streaming of the artist's other works, including albums like LPs or EPs.