One of the most beautiful sound sculptures in the world is situated in Cracow, Poland. Since centuries, every hour, after the clock chimes, a trumpeter plays a short, plaintive melody from the left tower of St. Mary Church (Kosciol Mariacki). He plays the melody four times - to the east, north, west, and south. The last note is cut abruptly short. Standing on the market place you hear the melody from the top of the tower .

According to legend, in 1241 tartars attacked the walled city of Cracow by surprise. The trumpeter in the tower began to play a warning call, but was stopped mid-note by an enemy arrow in his throat. The hejnal, that is the name of the melody, is played in his honor, because the city was roused in time to defeat the attackers.