for String Orchestra Score and Parts. Par LONGFIELD ROBERT (Arr.). The Song of the Birds (El cant dels ocells) is a traditional Catalan Christmas carol. It was made famous by Pau (Pablo) Casals, who is considered one of the greatest cellists of all time. He was famous the world over and played for such notables as Queen Victoria, Theodore Roosevelt, and John F. Kennedy. After Casals\' self-exile f…