Dance dance dance

Your client is performing a short, original dance as a class project. The performance takes place on the classroom and will only be seen by the class. You want to record a video of it to share with other interpreters who work with your client and know s/he is doing the performance.

Is it ok to ask your client if you can record them and share the recording with other people they know?

Suppose it's not a solo, but a group performance. Do you need to get the hearing people's permission too?