OK, so this may be a week or two late, but Cody Simpson just tweeted a cover he recently did of Jason Mraz' "I Won't Give Up" at a concert in the Bahamas and I love it. Is it just me or is the 15-year-old Aussie singer getting better and better? So impressed! Check it out and tell us what you think! Related: Cody talks to us about girls & his style!