Simon Cowell tells "The Voice" producers: I think your plan to upstage us "is gonna backfire."

Simon Cowell tells "The Voice" producers: I think your plan to upstage us "is gonna backfire."

This June 2012 photo released by FOX shows judges, from left, L.A. Reid, Demi Lovato, Britney Spears and Simon Cowell on the set of "The X Factor." The contest between "The Voice" and "The X Factor" is escalating after NBC scheduled its "Voice" against Wednesday's second-season debut of Fox's "X Factor." (AP Photo/FOX, Ray Mickshaw)

The bitter rivalry behind NBC's "The Voice" and Fox's "The X Factor" heats up.

Singing shows have become a reality T-V staple – and the rivalry between people behind the two biggest from this fall’s crop has turned bitter.

KOMO’s Ryan Harris had the chance to talk with judges Simon Cowell and Demi Lovato as they get ready to roll out the new season of Fox’s “The X-Factor”.

The X-Factor Season Two premieres Wednesday and Thursday nights.