When does Grojband return?

Grojband (a phonetic spelling of "garage band") is a Canadian animated television series. It follows the story of a Canadian indie rock garage band of the same name, formed by Corey Riffin and his three best friends: Laney and twin brothers Kin and Kon. The series premiered on June 10, 2013, in the United States, on September 5, 2013 and on April 21, 2014.