Global Sound Movement

Hidden Melodies

Published:

Explore Hidden Melodies, a GSM research project documenting and preserving endangered musical traditions, cultural identities, and rare sonic heritage.

Hidden Melodies is a multi-channel interactive sonic art installation by the Global Sound Movement that operates as practice-based research into site-specific sound, materiality, and participatory music systems. Developed through field recordings of stalactites and stalagmites in Lower St Michael’s Cave, Gibraltar, the work investigates how geological formations can be articulated as musical instruments through digital mediation, extending contemporary discourse in sonic art and sound architecture.

The research explores the resonance properties of stone using close-mic recording techniques, subsequently mapped within Ableton Live and MIDI-controlled interfaces to enable real-time manipulation of pitch, timbre, and spatialisation. This approach positions interaction itself as a research method, foregrounding embodied engagement and audience co-composition as central to the generation of musical meaning (Candy & Edmonds, 2018). Conceptually, the work draws on archaeological and ethnomusicological research into lithophones, situating the project within a lineage of early human sound-making practices while reframing these through 21st-century digital music technologies (Conard et al., 2009; Reznikoff, 2014).

A significant methodological contribution is the use of convolution reverbs generated from impulse responses recorded within Gibraltarian tunnels and cave systems. These site-specific acoustic signatures function as compositional material, producing an interconnected aural topology that reflects the Rock’s subterranean architecture and aligns with established practices in acoustic ecology and soundscape studies (Blesser & Salter, 2007; Truax, 2001). In this way, sound is treated simultaneously as medium, spatial descriptor, and geological trace.

Hidden Melodies contributes to research in music and sound art by demonstrating how interactive systems can reveal latent sonic affordances within natural environments while facilitating public engagement with place, heritage, and environmental listening. The project positions geological matter as an active musical agent and advances practice-as-research methodologies within UoA 34 by integrating composition, performance, spatial audio, and participatory interaction into a unified research output.

Additional Information

Originality

Hidden Melodies demonstrates originality through its integration of geological field recording, interactive digital music systems, and participatory performance within a single research output. While site-specific sound art and cave acoustics have been explored independently within sonic art and acoustic ecology, this project uniquely reframes geological formations themselves as playable musical instruments via real-time interaction. The translation of stalactite and stalagmite resonances into MIDI-controllable virtual instruments extends existing compositional paradigms beyond representation or soundscape documentation, introducing an original methodological approach to composition-as-interaction.

The project’s use of convolution reverb derived exclusively from impulse responses captured in Gibraltar’s subterranean spaces further distinguishes the work. These acoustic signatures are not treated as environmental effects but as compositional and structural elements, producing an interconnected aural topology specific to the Rock of Gibraltar. This approach advances current practices in sound installation by embedding place-based acoustics directly into the generative musical system rather than applying them post hoc.

Significance

The significance of Hidden Melodies lies in its contribution to contemporary research in music, sound art, and practice-as-research methodologies. The work expands understanding of how interactive audio systems can function as tools for public engagement with geological heritage, environmental sound, and non-Western histories of musical materiality. By foregrounding audience interaction, the project challenges conventional performer–listener hierarchies and demonstrates inclusive modes of music-making accessible to non-musicians.

The research also contributes to debates around sound as both medium and material, aligning with and extending scholarship in sonic art, acoustic ecology, and sound architecture. Its relevance to heritage, spatial listening, and environmental awareness positions the work within interdisciplinary research agendas, enhancing its reach beyond music to cultural geography and digital heritage studies.

Rigour

The rigour of Hidden Melodies is evidenced through a systematic and transparent research process combining fieldwork, technical experimentation, and theoretical contextualisation. Field recordings were conducted using established site-specific recording methodologies to capture the resonant properties of stone, while impulse responses were gathered using standard acoustic measurement techniques to ensure reproducibility and fidelity.

The compositional system was developed through iterative prototyping within Ableton Live, rigorously testing mappings between physical gesture, sonic response, and spatial behaviour. The work is underpinned by sustained engagement with relevant scholarly literature in practice-based research, acoustic ecology, prehistoric music studies, and sonic art, ensuring that artistic decisions are theoretically informed rather than intuitive alone. Audience interaction functions as a research instrument, generating embodied knowledge that is central to the work’s epistemological claims.

Bibliography
  • Cobussen, M. (2017) The Field of Musical Improvisation. Leiden: Leiden University Press.

  • Doğantan-Dack, M. (ed.) (2016) Artistic Practice as Research in Music: Theory, Criticism, Practice. London: Routledge.

  • Gilmurray, J. (2017) ‘Ecological sound art: steps towards a new field’, Organised Sound, 22(1), pp. 32–41.

  • Lacey, J. (2016) Sonic Rupture: A Practice-led Approach to Urban Soundscape Design. New York: Bloomsbury Academic.

  • Nelson, R. (2022) Practice as Research in the Arts (and Beyond): Principles, Processes, Contexts, Achievements. 2nd edn. Cham: Palgrave Macmillan.

  • Ouzounian, G. (2021) Stereophonica: Sound and Space in Science, Technology, and the Arts. Cambridge, MA: MIT Press.

  • Pham, V. (2024) ‘Negative space: an alternative framework for interpreting prehistoric sonic behaviours’, Journal of Cognition, 7(1).

  • Taylor, H. (2024) ‘Field recordings as invitation and transportation’, Continuum: Journal of Media & Cultural Studies, 38(1), pp. 42–55.

  • Valenzuela, J., Díaz-Andreu, M. and Escera, C. (2020) ‘Psychology meets archaeology: psychoarchaeoacoustics for understanding ancient minds and their relationship to the sacred’, Frontiers in Psychology, 11.

  • Vear, C. (ed.) (2022) The Routledge International Handbook of Practice-Based Research. London: Routledge.

  • Voegelin, S. (2021) Sonic Possible Worlds: Hearing the Continuum of Sound. Revised edn. New York: Bloomsbury Academic.

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