Konstancja Kochaniec was born in Wrocław.
She started to study piano at the Grażyna Bacewicz State Music School in Wrocław. From 1991 to 1997, she studied Piano at the Ryszard Bukowski State Secondary Music School in Wrocław in the class of Prof. Andrzej Janusz. She then studied Music Theory (from 1997 to 2000) and Composition (from 2000 to2003) with Prof. Leszek Wisłocki at the Music Academy in Wrocław. She did further studies in composition with Prof. Włodzimierz Kotoński in Warsaw (2003-2005). In 2009, she obtained the Master's Degree in Composition at the Music Academy in Katowice, in the class of Prof. Wiesław Cienciała.
She has also attended many contemporary music courses, notably the one held in 2004 in Bystrzyca Kłodzka (Poland), at which she developed her skills under the guidance of Bogusław Scheaffer and Hector Fiore.
She has received many commissions: soundtracks for films, television, theatre, music for solo instruments, chamber music, electronic music.