Hi Kate Rushton Thank you! To clarify, we have tested parts of project through prototyping. For example, to get feedback on haptic feedback in the device we facilitated sessions with an arduino prototype and 'wizard of oz' experience prototype. As for secondary research, the documentary mentioned above "Alive Inside" proves not only the well-known benefits of music, but also shows some remarkable cases where music has helped awaken the memory of people with Alzheimers. I hope that answers your question. We have just refined our contribution with updates!