Katarzyna Rooijens (born as Katarzyna Szczot 5 November 1967 in Warsaw), professionally known as Kayah, is a Polish singer-songwriter. In 1995, she released her first self-written album Kamień and established herself as one of the most successful Polish singers with further releases Zebra (1997) and Kayah i Bregović (1999). In the early 2000s, Kayah founded her own label, Kayax, which has signed up many successful artists and released numerous critically acclaimed albums. She has sold more than one million copies of her records so far and remains one of the most awarded artists by Polish music industry.