its really hard to let me choose, since all songs are my favorite. If I have to choose, i may choose Aura as a second single, because its melody is more catchy and cool. Meanwhile, Applause video's views in Youtube seems not to be outstanding, even till to now I still think its mv is the most perfect at all, and I love its melody/lyrics too. I hope she can make more miracles, except making us so happy and touching...:)
At the end of the day we still haven't heard the last three songs on the album! For all we know she might be trolling us and have some AMAZZZZZZZING song locked up ready to catch us off-guard