In music, tessitura (Italian: [tessiˈtuːra], pl. tessiture, "texture"; English: /tɛsɪˈtjuːrə/) is the most acceptable and comfortable vocal range for a given singer or less frequently, musical instrument, the range in which a given type of voice presents its best-sounding (or characteristic) timbre. This broad definition is often interpreted to refer specifically to the pitch range that most frequently occurs within a given part of a musical piece. Hence, in musical notation, tessitura is the ambitus in which that particular vocal (or less often instrumental) part lies—whether high or low, etc.