Barbara Kinga Majewska was born in Warsaw. Graduated form Detmold Music Academy (Solo Voice Studies / Art Song, Opera and Vocal Pedagogy), studied at Royal Academy of Music in Stockholm and University of Warsaw. In 2012 she completed interdisciplinary postgraduate course in Lied performance at Fryderyk Chopin University of Music in Warsaw.

Majewska was the finalist in 2009 NEUE STIMMEN International Singing Competition and was selected to participate in the 8th NEUE STIMMEN International Opera Master Class in 2009. In 2013 she was one of four singers to take part in the NEUE STIMMEN Lied Master Class with Angelika Kirchschlager and to perform Lied Recital in Konzerthaus Berlin.

Majewska performed with Arditti Quartet, Kwadrofonik Ensemble, Kwartludium Ensemble, Royal String Quartet and Garage Ensemble. She sung in Nowy Teatr in Warsaw, National Opera in Warsaw, Konzerthaus Berlin, NOSPR in Katowice, Teatrze Rozmaitości in Warsaw, Małopolski Ogród Sztuk in Kraków, Muzeum Sztuki in Łódź, Polish Radio Studios, Polin Museum in Warsaw, Królikarnia Museum in Warsaw, Museum for Contemporary Art in Warsaw, ICE in Kraków, Mediateka in Tychy, Center for Contemporary Art in Toruń and took part in Donaueschinger Musiktage (Kompositionsauftrag SWR), Warsaw Autumn Festival, Sacrum Profanum, Malta Festival, Muzyka na Szczytach, Kwadrofonik Festival, Kwartesencja Festival, Ogrody Muzyczne, Klang Festival.