Choi Tae Yang, known professionally as Theo, is a South Korean singer, dancer and member of P1HARMONY (피원하모니, often shortened to P1H). He graduated from Hanbat High School, and before debuting, he spent time as a trainee at SM Entertainment. He made his debut in October 2020 as the group's vocalist with their first mini-album, "Disharmony: Stand Out". They are managed by FNC Entertainment (FNC엔터테인먼트). (Source: MyDramaList) Watch drama online for free.