started learning the piano at the age of six, studying for 13 years with Ludmila Kasyanenko. He graduated from the Manhattan School of Music in the class of Solomon Mikowsky (2011), receiving the Harold and Helene Schonberg Scholarship in 2007–11. He then graduated from the class of Jerzy Sulikowski and Katarzyna Popowa-Zydroń at the Feliks Nowowiejski Music Academy in Bydgoszcz, where he is currently a lecturer, having obtained a PhD. 

Adam Kośmieja is one of the outstanding Polish pianists of the young generation. His continuing repertoire quest and expanding concert experience include both classical and avant-garde, multimedia works. He is very active as a concert performer in Poland and internationally, appearing on stages throughout North America, Europe, and Asia, notably at Carnegie Hall’s Weill Recital Hall and New York’s Yamaha Concert Artists Hall. In Poland, he has cooperated with all the leading orchestras, working with conductors such as Jacek Kaspszyk, Eiji Oue, Muhai Tang, Alexander Liebreich, José Maria Florêncio, Wojciech Michniewski, Szymon Bywalec, and Jakub Chrenowicz.

Kośmieja has performed at many international festivals including Warsaw Autumn, Beijing Modern Music Festival, Toronto International Electroacoustic Symposium, Shenzhen International Music Festival Belt & Road, Festivalul Internaț ional Craiova Muzicală, Musica Electronica Nova in Wroclaw, and international piano festivals in Spain to name a few. 

In 2016 he released his debut solo album on the DUX label titled Serocki – Complete Works for Solo Piano. In 2017 he appeared on Stefan Węgłowski’s album Contemporary Jewish Music (Kairos). In 2019 within the 100 / 100. Musical Decades of Freedom jubilee edition, he recorded Elżbieta Sikora’s Piano Concerto (2000) with Sinfonia Varsovia under Bassem Akiki, and Tadeusz Wielecki’s Numerous Branches of Rami ed Plaits (1988) for clarinet, piano and cello with Andrzej Bauer and Julian Paprocki. In September 2021, his new solo album was released on Warner Classics: Tribute to Gulda, which has received global critical acclaim. 

Adam Kośmieja holds scholarships from the Polish Ministry of Culture and National Heritage, Mayor of the City of Bydgoszcz, and Marshall of the Cuiavian–Pomeranian Voivodship.