ABC News, ‘Katy Perry Flute Fail: Singer Accidentally Reveals She's Not Really Playing Recorder’, https://www.youtube.com/watch?v=wbqFMgdSeGs, accessed 12 Apr. 2021. Classic Voice212 (2017), http://www.classicvoice.com/riviste/classic-voice-digital/classic-voice-212-digitale.html, accessed 14 June 2020. Chion, M., Audio-Vision. Sound on Screen (Columbia University Press: New York Chichester, 1990). Chłopecki, A., ‘Wizualizacja’, in Dziennik ucha. Słuchane na ostro(PWM: Kraków, 2013; Wydawnictwo Krytyki Politycznej: Warszawa, 2013). Cox, Ch., Warner, D. eds, Audio Culture. Readings in Modern Music (Bloomsbury Publishing: London, 2004). Eggebrecht, H.H., Understanding Music. The Nature and Limits of Musical Cognition, tr. by Richard Evans (Routledge: London, 2010). Forman, M., excerpt from the film Amadeus(1974), https://www.youtube.com/watch?v=3glswAQNR7c, accessed 12 Apr. 2021. Holmboe, R., ‘Out of the Box’, liner notes for a DVD, Dacapo Records, https://www.dacapo-records.dk/en/recordings/steen-andersen-black-box-music, accessed 10 Apr. 2021. Kamiński, P., Tysiąc i jedna opera(PWM: Kraków, 2015). Metropolitan Opera, The Magic Flute (2006), Papageno’s aria, https://www.youtube.com/watch?v=qF0lidudY74, accessed 12 Apr. 2021. Kowalska-Zając, E., Zobaczyć muzyką, Notacja polskiej partytury współczesnej(Akademia Muzyczna im. Grażyny i Kiejstuta Bacewiczów w Łodzi: Łódź, 2019). Oxford English and Spanish Dictionary, Thesaurus, and Spanish to English Translator, https://www.lexico.com. Schaeffer, B., Mały informator muzyki XX wieku(PWM: Kraków, 1975). Schaeffer, B., Muzyka XX wieku. Twórcy i problemy(Wydawnictwo Literackie: Kraków, 1975). Schaeffer, P.‘Acousmatics’, in Ch. Cox, D. Warner, eds, Audio Culture. Readings in Modern Music (Bloomsbury Publishing: London, 2004), 76-81. Steen-Andersen, S., Black Box Music (editor’s materials), introduction to the score (2020), https://www.edition-s.dk/music/simon-steen-andersen/black-box-music, accessed 10 Apr. 2021. Steen-Andersen, S., Festival TACEC 2018, https://www.youtube.com/watch?v=PFSkfwRcv1E&t=33s, accessed 10 Apr. 2021. Steen-Andersen S., A musical approa[c]h to audio/visual composition: Implicit AV aspects of musical performance, AV-objects and musical excuses…, https://www.youtube.com/watch?v=YGfKe99aa7s, , accessed 10 Apr. 2021.