Even pop-music sounds better in rock-covers

Don't you ever think how our music world could be if we've got all these pop-hits written like punk, grundge or other rock styles? JT's and Beyonce's songs can be twice as popular maybe or maybe not. In any case, these guys have made nice example of a catchy cover with a strong sound and good impact on the audience. Listen to these re-born hits and have a nice end of the office week, TGIF folks :)