User blog comment:OCcreator14/Can Cure Melody transform with ether Muse or Beat other than Rhythm/@comment-28808867-20120810161915

I don't really think so. But on the other hand, i do have a theory that they (HIbiki and Kanade) can transform individually. But maybe Hibiki and Kanade can transform with Ellen and Ako respectively.

My theory for individual transformation with Hibiki and Kanade is that in episode 19 they were in different dimensions with their repspective Fairy Tones nowhere to be found as they were still in the human world.