https://phaidra.kug.ac.at/o:134531 Gross-Vogt, Katharina (University of Music and Performing Arts Graz) eng video/mp4 MovingImage CC BY-NC-SA 4.0 International http://creativecommons.org/licenses/by-nc-sa/4.0/ Demo video of the letter day project - H 2024-08-07 The videos are described in the paper: Katharina Gross-Vogt. 2024. The letter day project - designing sonic in- teraction for learning letters . In Proceedings of Audio Mostly 2024 - Ex- plorations in Sonic Cultures (AM ’24). ACM, New York, NY, USA, 9 pages. {https://doi.org/https://doi.org/10.1145/3678299.3678352}