When did cimorelli start singing?

Cimorelli is an American pop and Christian music group consisting of six sisters: Christina, Katherine, Lisa, Amy, Lauren and Dani Cimorelli. It all began in 2007, when the six sisters were still children and discovered their passion for music. They began singing together as a hobby and uploaded cover versions of popular songs to their YouTube channel, CimorelliSisters. In 2008, they signed a record deal with the independent label, Independent Music Group, and released their debut studio album, "Cimorelli".