After the Second World War, music focused on the hardships of the Belarusian people or on those who took up arms in defense of the homeland. During this period, Anatoly Bogatyrev, creator of the opera ''In Polesye Virgin Forest'', served as the "tutor" of Belarusian composers. The National Academic Theatre of Ballet in Minsk was awarded the Benois de la Dance Prize in 1996 as the top ballet company in the world. Rock music has become increasingly popular in recent years, though the Belarusian government has attempted to limit the amount of foreign music aired on the radio in favor of traditional Belarusian music. Since 2004, Belarus has been sending artists to the Eurovision Song Contest.