O.N.A. (1994?2003) was a Polish hard rock band formed by two former members of band Kombi: Grzegorz Skawi?ski (guitar), Waldemar Tkaczyk (bass) and a drummer Zbigniew Kraszewski, a keyboarder Wojciech Horny and a vocalist Agnieszka Chyli?ska. They released six critically acclaimed albums and a lot of hits such as Kiedy powiem sobie do??, Znalaz?am, Drzwi, Niekochana. They disbanded in 2003 because of difference of artistic visions.
Skawi?ski and Tkaczyk reactivated Kombi (under a new name Kombii), A. Chyli?ska formed with Z. Kraszewski, W. Horny (from O.N.A.) and K. Misiak, D. Osi?ski a new band called Chyli?ska. Now she released an album Modern Rocking as Agnieszka Chyli?ska