👉 Apetalous is a concept in music theory that refers to a musical instrument that has two articulations, one being an open articulation and the other being a closed articulation. This is often used when referring to a stringed instrument such as a guitar or violin. The term "apetalous" comes from the Greek word "apo," meaning "open," and "telos," meaning "articulation." In music theory, it's used to indicate that two different parts of an instrument