Konstantinos Koufos is one of the most viral singers, with his success having millions of views on RU-vid. He started playing music as a DJ. He became widely known through the group PersonaS, which he founded with his friend Alexandros Avlonitis and uploaded covers of well-known songs on RU-vid. In April 2015, he adapted in Greek the hit “Uno Momento” entitled “I Pio Oraia Stin Ellada” which became the hit of the year. Since today, the song has over 70 million RU-vid views and is considered as the most popular video by a Greek artist with Greek lyrics. In the same year he made his first appearance on stage, next to Nikos Vertis. Each of his songs breaks records on RU-vid and becomes a hit, such as “Metro Antistrofa (5,4,3,2,1)”, which is his first release under his own name and not as PersonaS. In 2016 he won the award for the best newcomer at the MAD Video Music Awards and appeared on the shows’ stage.