Lithuanian Song Celebration (Song and Dance Festival) 90th anniversary, Vilnius, Lithuania (5 July 2014). Pictured here, two dancers prepare for a performance on Dance Day - a huge, elaborately choreographed traditional dance performance, held in the Zalgiris Stadium in Vilnius. The Song Celebration in Vilnius is Lithuania's greatest cultural event, occurring only once every four years, and along with similar festivals in Latvia and Estonia, is inscribed on the UNESCO list of Intangible Cultural Heritage. © Rudolf Abraham.