Vowel chimes are a type of musical instrument that produce different sounds when struck or played. They are also known as singing pipes, singing tubes, or sound tubes. These instruments are commonly used in music therapy and education to teach pitch recognition and musical concepts. Other synonym terms for vowel chimes include tonal tubes, phonetic pipes, and vocal pipes. These instruments are often made from metal or plastic and come in various sizes and colors. They are great for children and adults alike who are interested in exploring the world of music and sound.