I have a serious weak spot for a capella groups, and whether you are a Taylor Swift fan or not, you have to appreciate what this incredible group has done with her latest single 'I Knew You Were Trouble'.

Taylor Swift continues to make history and break records with her music, and even though I don't think she is the most talented artist out there (by a long shot if I'm being honest) I do have to give her props for continuing to write her own music, and really her lyrics aren't half bad. Which is exactly why I love it when other musicians cover her songs and make them sound good.

Check out this a capella group 'Walk Off the Earth' performing the latest hit from Swift.