"Quartet" is a term that typically refers to a group of four people or things. In music, a quartet often consists of four musicians playing together, such as a string quartet made up of two violins, a viola, and a cello. This arrangement allows for rich harmonies and intricate melodies, showcasing the unique talents of each musician. In literature and film, "Quartet" can also refer to stories that revolve around four main characters or themes. For example, the movie "Quartet" features a group of retired musicians living in a home for artists, exploring their relationships and the challenges of aging. This narrative highlights the importance of friendship and creativity in later life.