Embarking on an European tour next year are the cast of Glee, who were on The X Factor stage to perform Don't Stop Believing and plug their Christmas album and upcoming tour. The cast were okay vocally and they put on their Regionals' outfits, y'know, the gold one which I personally love. Lea Michele was clearly the best singer live. The rest were okay. Somehow, the Glee magic doesn't translate that well to a live performance, well at least on that stage.