Pachelbel's Canon is a classical piece of music composed by Johann Pachelbel in the late 17th century. It is best known for its simple yet beautiful melody, which is played by three violins and accompanied by a cello. The piece is structured as a canon, meaning that the main theme is repeated and layered, creating a harmonious effect. The composition is often performed at weddings and other celebrations due to its uplifting and serene nature. Its popularity has led to numerous adaptations and arrangements, making it one of the most recognizable pieces in classical music today.