Right from the outset, this will give them a moral right over their performances. That is already very important. It will no longer be possible to use audiovisual performances for a cause or a product without first asking the artist for permission. Nor will people be able to alter their performances in a way that distorts them.
The moral right will be introduced when the Beijing Treaty on Audiovisual Performances is implemented, to the extent that Canada ratifies it. This will give all of the copyrights to the performing artist. Once you have all of the copyrights, you can continue to negotiate in contractual agreements.