His works have appeared on Acte Préalable, Arktos, ATMA Classique, Centrediscs, Claves, Clef Records, CML, Eclectra, PGMaudio, New Music North, Requiem Records and edition zeitklang labels, have been broadcast and published in Canada, Europe and USA, and performed at numerous festivals and concert series across North America, Europe and Asia. He is a Voting Member of the Canadian Music Centre. As a CD producer, he has over a dozen releases to his credit, featuring works by nearly eighty Canadian and international contemporary composers. In 1997, he won the Alberta Motion Picture Industries Association (AMPIA) Award in Musical Score/Composer category (“Black Angels” by Cynthia Wells). Other prizes and awards include the composers’ competitions in Łódź, Poland (“aennea” for guitar solo); Kraków, Poland (“Motet” for six vocal soloists); and The Pierre Boulez Canadian Composers Competition in Halifax, Nova Scotia (1991, “Horror vacui” – triptych for strings named by Pierre Boulez in third place).
Grella-Możejko is also recipient of the Social Sciences and Humanities Research Council of Canada Doctoral Fellowship (2000-2002) as well as the University of Alberta Beryl Barns Award, Walter H Johns Fellowship, Andrew Stewart Memorial Graduate Prize, Marie Louise Imrie Graduate Award; a professional development grant awarded by The Canada Council for the Arts (2004); as well as major creative/research grants from the Edmonton Arts Council (2009), The Alberta Foundation for the Arts (2010), and the Alberta Creative Development Initiative (a joint programme between the Alberta Foundation for the Arts and the Canada Council, 2010).
His work in multimedia has gained international recognition as have his soundtracks. Grella-Możejko has worked with a number of critically acclaimed filmmakers and video artists, including Renata Mikos (Poland), Cynthia Wells, Jeremy Rittwage, Christopher Payne, and Lindsay McIntyre (all Canada). His collaborations with some of Canada’s most innovative dance ensembles such as The Brian Webb Dance Company, Gerry Morita/Mile Zero Dance, and The Good Women Dance Collective, have been presented in Canada and Europe and received much critical acclaim.
In 2006 founded, and has since performed with, Ensemble Mujirushi, an interdisciplinary modular collective featuring Canada’s leading New Music performers and artists. A “supergroup” (‘The Edmonton Journal’), which specialises in incorporating live electronics and interactive video into its performances, the Ensemble had its first European tour in November 2009, appearing at the prestigious Audio Art Festival in Kraków, Poland. Another tour, this time in Canada, followed in October 2010, taking the ensemble to Lethbridge, Saskatoon, Thunder Bay, Kitchener-Waterloo, Toronto, and Montréal.
Focussing on the relationships between sound, text and image, Grella-Możejko has published in major scholarly and popular periodicals in Canada, Europe, and the UK, including the ‘Canadian Slavonic Papers’, ‘Contemporary Music Review’, ‘MusicWorks’, ‘The Alberta New Music and Arts Review’, to mention just a few. Between 2009 and 2015, he hosted an own show, ‘Avant-garde and Beyond’, on CJSR Radio in Edmonton, available world-wide on the Internet. Since August 2015, Piotr writes a monthly column “Tongue on Strings” for Poland’s leading arts and culture periodical, «Śląsk» [Silesia/Schlesien].