Music stars Avril Lavigne, Adam Lambert, Colbie Caillat, and Claude Kelly have joined a growing lineup of top musical artists who will appear as mentors (“Majors”) to aspiring young talent on the upcoming original reality series “Majors & Minors”, premiering September 23 on The Hub TV Network, a destination for kids and their families. They join previously announced artists including Brandy, Leona Lewis, Jordin Sparks, Sean Kingston, Mike Posner and One Republic's Ryan Tedder. Other major artists will be announced later and all will serve as “mentors,” guiding the talented cast as they embark on their individual journeys toward stardom. (Source: HUB TV)