"Pitch simultaneity" is a term that refers to the occurrence of multiple pitches played or sung at the same time. This musical concept can be described using a variety of synonyms. For example, it is commonly known as "harmony," which refers to the combination of different pitches or notes that complement one another to create a pleasant-sounding musical texture. Another synonym for "pitch simultaneity" is "chord," which refers to a group of three or more notes that are played simultaneously to create a harmonic relationship. Additionally, "melody harmony" and "counterpoint" are also terms used to describe pitch simultaneity in music. Regardless of the term used, pitch simultaneity is an important element in creating depth and complexity in various musical genres.