Complex sentence: Aleksandra and Konstantin, a duo comprised of singer Aleksandra Kirsanova and guitarist Konstantin Drapezo represented Belarus in their inaugural entry in the Eurovision Song Contest, singing My Galileo in the 2004 Contest.
Split into simpler sentences: Aleksandra and Konstantin is the musical duo of singer Aleksandra Kirsanova and guitarist Konstantin Drapezo. They represented Belarus in their inaugural entry in the Eurovision Song Contest, singing "My Galileo" in the 2004 Contest.