At my previous placement, I never got to teach summer school, but I would prepare a few "substitute" music sessions that teachers could easily do in their classrooms so students still got some music time! I created PowerPoints, using YouTube videos and self-recorded videos, as well. Then I boxed up all their needed supplies and sent them the PowerPoints on Google drive. It worked so well! Here is one, simple, very straightforward example. :) (BTW, I've never had luck viewing the videos in Google Slides, you will probably have to download, then watch. LMK!) Click here to check it out!
School-Based Music Therapy Ideas