Marek Piekarczyk (born 1951, Poznań) is a Polish rock vocalist, most famous for being the singer of the legendary Polish band TSA. Marek Piekarczyk has been singing since 1969. His first bands were Biała 21 and Sektor A. However his career started for good in 1981, when he joined TSA. Since the band reactivation in 2001, he has been touring with TSA across Poland. In 2004 they released an album "Proceder".