While the 24-year-old's team initially confirmed that Demi only wrote the top line of her 2015 bonus track Stars and didn't actually steal anything from the musical duo's 2010 single Infinity Guitars… SB's Alexis Krauss and Derek Edward Miller still think differently to this day.
Not only do the two celebs jam out to some of The Material Girl's greatest hits, but the Queen of Pop talks a bit about her personal life -- like the time she made out with Michael Jackson! Oh, don't worry, there's plenty of dancing and twerking too.
Ch-ch-check out Madonna and James as they get their karaoke on, carpool style (below)! Be sure to let us know if you're shocked by the singer's MJ story!