^^ I heard some japanese between the english in a song, the japanese isn't written in the video that's why you might have missed it.
EDIT : It was in Golden Touch
Now that i've listened to the previews again, i like the songs more, they sound nice, but damn i'm shocked at how uninspired some of her lyrics are "everybody say oh oh oh oh, yeah yeah yeah", it's too bad because i really like how Scream sounds. Or that song when she's repeating "Round Round Round", we already had Go Round for that thank you