About: http://dbpedia.org/resource/Nikos_Karvelas

Nikos Karvelas is one of the most successful composers of all time in Greece, as well as a singer. He has sold millions of records as a producer and is most recognizable for his nearly three decade long exclusive collaboration with Anna Vissi, the country's best-selling female artist, while some of his other well known collaborations include Sakis Rouvas. Karvelas has released many albums of his own that have had mild success.