The circular-bodied guitar is a unique instrument that has several synonyms. It is often referred to as a roundback guitar, bowl-backed guitar, or Ovation guitar. The roundback guitar is known for its rounded body which is usually made of fiberglass or carbon fiber. The bowl-backed guitar is a similar instrument that features a circular bowl-shaped back made of wood. The Ovation guitar is a specific brand of circular-bodied guitar that has a unique composite back made of Lyrachord. All of these guitars have a distinctively rich sound and are popular among musicians in various genres, including classical, folk, and rock music.