Songwriters claim pop star ripped off "Photograph" from tune they wrote for 'X Factor' winner
The British judge also shades rival singing competitions 'The Voice' and 'Rising Star'
"There have just been a ton of shows, and something has simply gone awry," Simon Cowell says
One Direction, Lea Michele and more perform in two-hour show
Aging rocker challenges Alex and Sierra in final performances
Singer plans to tour and record a new album in 2014
Latin singer surprisingly makes it into the finale
Kelly Rowland breaks down in tears while talking to Jeff Gutt
Watch contestants Rion Paige and Ellona Santiago get the boot
Tearful top six makes Demi Lovato cry ahead of double elimination
Viewer votes save Rion Paige after judges' deadlock
Watch the singer discuss her recovery from addiction
'I like classic songs that will be around for a long time'
Khaya Cohen, Tim Olstad fail to make it to the next round
Lillie McCloud and Alex and Sierra are the lone standouts