Well, darn! I just asked one of the band members, and I was mistaken. The band backed Jace on a song called "Good life", but not "Bad Things." It's a good song, though, if you wanna check it out haha. Not the best quality, and I can't find it anywhere but Velvet Love Box's site. It's at www.velvetlovebox.com and it's in the "News" section. They are a cover band and their Facebook page is more active than their actual website.