100th Grey Cup half time

I apologize for not doing a post in a long time (mainly because I'm a terrible procrastinator and never get around to doing anything). 6 days from now the Calgary Stampeders will be taking on the Toronto Argonauts in Toronto for the 100th grey cup, the 100th grey cup on its own makes me excited, but having my favorite team (the Stamps) and my dads favorite team (the Argos) will make for a good rowdy night. The one thing that surprised me was the line-up that has been decided for the halftime show, which includes Justin Bieber, Carly Rae Jepsen, Marianas Trench, and Gordon Lightfoot. When I think of what sort of music would be played at the Grey cup I tend to think of country or rock music, not the line up they have planned for the 100th halftime show (excluding Gordon lightfoot, he fits the genre I had depicted). I first heard of the line up a couple weeks ago on a radio station (90.3 Amp radio i think) and I thought they were kidding when they delivered the news, so when  I went home i double checked the Internet to be certain, and sure enough there were numerous websites depicting the news. At first I thought that it wasn't the greatest lineup for the average viewer of football, they are all Canadian so that makes sense. I then read an article in Macleans where Mark Cohen, the CFL commissioner, was quoted saying “We have an all-star lineup that features the biggest pop star in the world, the woman who gave us one of the biggest songs ever, one of our country's hottest young bands, and an iconic balladeer". This made sense of the situation for me but I still don't quite believe in the music choice the was decided upon.