Kasia was born on June 13, 1973, and grew up in Sulejówek, a town near Warsaw, together with her two older brothers. From an early age, music has been an inseparable part of her life. She received her first recognition as a child, winning a prize at a scouting song contest. Soon after, she began performing with amateur bands, often dedicating every spare moment to singing the songs of her favourite artists.

Over the years, music has shaped her unique sensitivity to sound and expression. For Kasia, it remains not only a passion but also the most authentic way to share her emotions and connect with audiences.