Drake Music are a long-established organisation working in the areas of music, disability and technology. There are a lot of resources on their website, so have a look around, but here's some to get you started:
Guides for using three iPad apps useful for inclusive music (GarageBand, Thumbjam, and LoopSeque):
https://www.drakemusic.org/learning/sector-development-and-support/resources-for-music-education/using-ipads-for-music/
Resources useful during Covid-19:
https://www.drakemusic.org/blog/becky-morris-knight/resources-for-musicians-artists-during-covid-19/
Lots more news, activities, resources, and research on their main news page:
https://www.drakemusic.org/news-and-views/
Tips on how to make online video work more accessible for people with additional needs:
https://www.drakemusic.org/blog/becky-morris-knight/accessibility-in-video-conferencing-and-remote-meetings/