The use of this Phoenician letter to get a vowel sound is due to the early Greek alphabets, which adopted the letter "omicron" to stand for the vowel /o/. The letter was adopted with the worth while in the Outdated Italic alphabets, including the early Latin alphabet. Good Vocabulary: https://shaneudjos.tkzblog.com/36838074/little-known-facts-about-musica-infantil