Fox sibling MundoFox will produce El Factor X, an original Spanish-language version of The X Factor, which will premiere this summer. Produced by FremantleMedia Latin America for MundoFox, El Factor X will feature aspiring singers from 8 to 15 years old, both solo artists and vocal groups. El Factor X joins Telemundo’s La Voz Kids, a Spanish-language version of The Voice for kids.