Warsaw-born Maciej Grzybowski played with Poland's distinguished Sinfonia Varsovia in 1991-92 under such master conductors as Jan Krenz, Witold Lutoslawski, Krzysztof Penderecki, and Grzegorz Nowak. In 1992, he won the Main Prize and the Special Price in the 1st Twentieth-Century Music Competition for Young Performers, organized in Warsaw by the International Society for Contemporary Music, Polish Section. He has recorded music for record companies, radio, and television. He has performed as a soloist and chamber musician with Dorota Anderszewska, Anna Karasinska, Urszula Kryger, Olga Pasichnyk, Jadwiga Rappé, Jerzy Artysz, Andrzej Bauer, Krzysztof Bakowski, Jonathan Del Mar, Jacek Kaspszyk, Adam Klocek, Adam Kruszewski, Jerzy Maksymiuk, Wojciech Michniewski, Ivan Monighetti, Marek Mos, Janusz Olejniczak, Pawel Mykietyn, Wojciech Rajski, Håkan Rosengren, Tomasz Strahl and others, as well as the Camerata Quartet, Silesian Quartet, AUKSO Orchestra, Leopoldinum Orchestra, Polish Radio National Symphony Orchecow Philharmonic Orchestra, and the Polish Radio Orchestra.
In 1996-2000 (together with Justyna Reksc-Raubo) he was artistic director of the concert cycle 'NONSTROM presents', held in Warsaw. Chosen as the Individuality of the Year 1997, he played a special concert on Polish Television Program I. A member of the NONSTROM ensemble since 1992, in 1998, together with this ensemble he won the Special Award in the 4th International Music Competition in Düsseldorf. He was nominated three times for the "Passport" Award of the "Polityka" Weekly (individually in 1999 and 2003, and with the NONSTROM ensemble in 1998).
Grzybowski has taken part in numerous festivals, including the Warsaw Autumn, Musica Polonica Nova in Wroclaw, Biennale of Contemporary Music in Zagreb, Hofkonzerte im Podewil in Berlin, as well as festivals in Lvov, Kiev, Odessa, International Piano Stars in Liepaia, Witold Lutoslawski Forum in Warsaw, Warsaw Music Encounters, and the Polish Radio Music Festivals in Warsaw (during the latter festival, he played two recitals shared with Nelson Goerner and Piotr Anderszewski). In December 2001, he was invited to participate in the Chamber Music Festival "The Silesian Quartet and its Guests" in Rybna. In September 2002 he performed as a soloist in Grieg's Concerto with Polish Radio National Symphony Orchestra of Katowice conducted by Jonathan Del Mar during the 6th evening of the "Last Night of the Proms" at the Cracow Philharmonic. In the 2003/2004 season, thanks to the enthusiasm and personal involvement of the great Polish musicologist Prof. Michal Bristiger, Grzybowski performed a more than 100-minute-long concert with music by the phenomenal, once world-famous but now long forgotten, pianist and composer Andrzej Czajkowski, one of the most outstanding Polish composers of the 20th century.
In 2004, Grzybowski released the first CD album dedicated to his performances, with works by Johann Sebastian Bach, Alban Berg, Pawel Mykietyn, Arnold Schönberg and Pawel Szymanski, under the label of Universal Music Polska. In 2005 this CD was nominated for the Fryderyk Award of the Polish music record industry. In March 2005, Grzybowski played a recital of works by Fryderyk Chopin, Andrzej Czajkowski, Pawel Mykietyn and his own composition in Bologne's Mozart Hall - a concert hailed as one of the greatest artistic events there in recent years.