The use of this Phoenician letter for just a vowel sound is because of the early Greek alphabets, which adopted the letter "omicron" to depict the vowel /o/. The letter was adopted with the worth from the Outdated Italic alphabets, such as the early Latin alphabet. Spotify is unavailable https://eduardozhlps.bloggazza.com/36052266/facts-about-o-sapinho-e-a-borboleta-revealed