 Later in 1971 Euson and Lenny Kuhr took part in the Sopot International Song Festival, a musical festival and song contest in Poland.Euson was the winner of the Viña del Mar International Song Festival in Chile in 1972 where he represented the Netherlands with the song 'Julie' written and composed by himself.In 1973 together with Oscar Harris, he represented the Netherlands again at the Golden Orpheus song contest in Bulgaria.