Roman Ślęzak was born in 1909 in Baranów Sandomierski. From 1929, when he graduated in State Male School for Teachers in Rudnik upon San until his death in 1968 he worked as a teacher. He completed his education all the time and taught diverse subjects: music and singing, drawing, biology etc. During the war he took part in secret teaching and made living by painting oil pictures. From 1952 he was headmaster of high school in Nisko. The song "Rozszumiały się wierzby płaczące" ("Weeping willows rustled up")was written in 1937 for singing classes while Ślęzak was teacher of music in Cadet School for Underaged in Nisko. Originally weeping trees was not wierzby - willows, but brzozy - birches, of them are made often crosses for soldier graves in Poland. War in words of first touch was more regulary - the author couldn't presume, that troops of country that has such strong allys would be forced to fight in forest. NB in part of land where Ślęzak came from and where passed his life - south-east Poland - woods and forests are very beautyfull. The tune - like the one of most well-known song of Piłsudzki's legioneers "Pierwsza brygada" is taken from a march of tzar's military music – comes from the times of partitions Poland’s among Russia, Prussia and Habsburg Monarchy. The original title of piece is "Farewell of Slavic girl" and was composed by Vasilij Agapkin, trumpeter of Caucasian Cavalry Division and conductor of military brass.