"What doesn't kill you makes you stronger. Stand a little taller!.." Before I get lost in crooning.. Let me introduce 3 of those:
1) the original - none other than KELLY CLARKSON! She rox truly!
2) Glee cover - Complete with dance moves! Naya Rivera's voice rocks my world! Amber Riley and Heather Morris! Girlpower totally lolx
3) Sam Tsui - his singing prowess and versatility is really awesome!