Pachelbel's Canon in D is a classical piece composed by Johann Pachelbel in the late 17th century. It features a repeating bass line, known as a ground bass, which is accompanied by three violins playing variations of a simple melody. This structure creates a harmonious and soothing sound that has made it popular in various settings. The piece is often performed at weddings and other celebrations due to its uplifting and serene qualities. Its influence can be seen in many modern songs and arrangements, showcasing its timeless appeal and versatility in both classical and contemporary music.