Born in 1981, he graduated in composition from Warsaw’s Fryderyk Chopin University of Music in the class of Zygmunt Krauze, sound engineering from the class of Andrzej Lupa, as well as in journalism and political sciences from the University of Warsaw. He is head of Chopin University Electronic Music Studio, at the Faculty of Composition and Theory of Music, Fryderyk Chopin University of Music. His works have been performed at many festivals in Poland and abroad, including New Music Concerts (Toronto), Warsaw Autumn, Polish Modern: New Directions in Polish Music Since 1945 (New York), Intersonanzen (Postdam), Afekt Festival (Tallin), Musica Electronica Nova (Wrocław), AudioArt (Cracow) by ensembles such as Musikfabrik, Polish Radio Orchestra, United Instruments of Lucilin, Gorzów Philharmonic, New Music Concerts Ensemble, Wratislavia Orchestra, Kwartludium and Hashtag Ensemble.
He writes both acoustic and electroacoustic music, as well as works for theatre and film. In his music he uses objectophones – musical instruments he constructs out of everyday objects, the sound of which is transformed live. He is a creator of Gesturephone – electroacoustic instrument, in which the sound is controlled by gestures. He also uses rare and unusual string instruments, such as zithers or Harry Partch instruments.
Wojciech Błażejczyk has won prizes at several competitions for composers, including Prix CIME 2019 (reward of International Confederation of Electroacoustic Music) for the piece #NetworkMusic, the 3rd Prize at the 1st Arboretum International Krzysztof Pendrecki Competition as well as the 2nd and 1st Prize at the Tadeusz Baird Competition for Young Composers (2010 and 2011). His Warsaw Music was a finalist of the European Broadcasting Union’s 2016 Palma Ars Acustica. In 2013 he took part in the IRCAM Forum Workshops in Paris and in 2017, in the Composer Collider programme with the Musikfabrik ensemble (2017). He released CD's „Loopovisations” (For Tune Records, 2013), „Trash Music” (Requiem Records, 2018) and „General Theory of Relativity” (KAIROS, 2021, with Klangforum Wien) as well as improvised CD's with Hashtag Ensemble (Visegard Songs, 2013, #Witkacy, 2018, both released by Requiem Records).
Wojciech Błażejczyk is also active as a guitarist. He performs new music on the electric guitar and using electronics. He has appeared in concert at festivals such as Warsaw Autumn, Sacrum Profanum, Ad Libitum, Intersonanzen, Ankunft : Neue Musik, Olympus Jazz Festival. He is a member of Hashtag Ensemble, a group specialising in new music. In addition, he performs improvised music, as a soloist, using guitars, electronics and objectophones, as well as appearing notably with Mud Cavaliers, Electronisches Glück, Adam Pierończyk, Agata Zubel, Krzysztof Knittel and Joëlle Léandre. He is also part of Silent Movie ensemble, which performs live music to silent films. As a sound engineer, he specialises in recording and projecting sound at concerts of new music as well as creating sound design for film. He conducted electroacoustic music workshops at the Synthesis International Composition Course in Radziejowice. He also conducts workshops for children, exploring electroacoustic music and use of objects in music.