It's great when a virtual unknown rises through the ranks of a singing competition to achieve superstardom, but for all of the success stories out there -- Chris Daughtry, Kelly Clarkson, Leona Lewis, Susan Boyle and Carrie Underwood -- there are plenty more that are never heard from again, often with good reason.

With shows like 'American Idol,' 'America's Got Talent,' and 'X Factor' and all the various shows around the world, there are plenty of open auditions, a wealth of competitors, and lots of opportunities for big time singing fails. Here we look at some of the worst singing show fails from around the world.