Czesław Niemen was a Polish singer-songwriter and composer who made a lasting impact on the music scene in Poland and beyond. He was born in 1944 in Szczecin, Poland, and began his musical career in the late 1960s. He
From Wikipedia
Czesław Niemen, often credited mononymously as Niemen, was a Polish singer-songwriter, composer, and bandleader. Singing primarily in Polish, he is regarded as one of the most important and innovative Polish singer-songwriters and rock balladeers of the 20th century, representing one of the main pillars of the countercultural big-beat genre of the Eastern Bloc. He was noted to possess an atypically wide vocal range with rich intonation.