Yeah I didn't know why Jonas Brothers were co-hosting.
But MuchMusic and MTV are both under CTV Globemedia that's why they sometimes share shows and whatnot. Also for those who don't know, MTV Canada isn't allowed to show music videos because that's what MuchMusic is supposed to be for, and there's a Canadian law that says that there is a specific percentage of Canadian and international content they can show but lately they just put out a lot of reality programs for both networks.
Here's the link to her performance I don't know if it'll work outside of Canada
BUT HERE IS A PICTURE

At the end of it I was all OMG SRSLY