This repository contains free-improvised performances by percussion/computer group, Ensemble Metatone. This series of rehearsals-as-research was performed to investigate percussive interactions with touch-screen computer music instruments developed by Charles Martin. These performances were recorded with multiple channels of audio and video. Touch-screen data from the computer music instruments was also recorded and animated to help understand the performers’ touch gestures throughout the performance. The video of each performance as well as interaction log data have been archived in this repository. The performances were free-improvised with no instructions given to any of the performers. The end of the improvisation was defined to be when all performers had stopped playing. The sessions took place between April and August 2013 in the ANU School of Music Listening Space studio and Band Room concert hall. Apps: The two iPad apps used in this study were MetaTravels (doi: 10.5281/zenodo.50705) and MetaLonsdale (doi: 10.5281/zenodo.50716). These apps are further discussed in the references below. References: This rehearsal-as-research series has been discussed in more depth in the following publications. C. Martin, H. Gardner, and B. Swift. Exploring percussive gesture on iPads with Ensemble Metatone. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, CHI ’14, pages 1025–1028, New York, NY, USA, 2014. ACM. doi: 10.1145/2556288.2557226 C. Martin. Making improvised music for iPad and percussion with Ensemble Metatone. In T. Opie, editor, Proceedings of the Australasian Computer Music Conference, ACMC 2014, pages 115–118, Fitzroy, Australia, 2014. Australasian Computer Music Association. http://hdl.handle.net/1885/95314 C. Martin, H. Gardner, and B. Swift. MetaTravels and MetaLonsdale: iPad apps for percussive impro- visation. In CHI ’14 Extended Abstracts on Human Factors in Computing Systems, CHI EA ’14, pages 547–550, New York, NY, USA, 2014. ACM. doi: 10.1145/2559206.2574805 C. Martin and H. Gardner. A percussion-focussed approach to preserving touch-screen improvisation. In D. England, T. Schiphorst, and N. Bryan-Kinns, editors, Curating the Digital: Spaces for Art and Interaction, Springer Series on Cultural Computing. Springer International Publishing, Switzerland, 2016. DOI: 10.1007/978–3–319–28722–5 Copyright These data are released for free use under the Artistic License 2.0, however, the performers retain Copyright and moral right over their original improvised performances.

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