Yes, they sang live but I noticed some members had backup tracks while they sang (Rukapyon, Rena and Michaela). All of them have potential to be strong singers given time. I was surprised with Furuhashi since she sounded the best out of all of them, even better than Sekiya.
Their coupling song (Muneatsu Seitansai) is very good. Reminded me of Momoiro Clover.