What's the name of the song and artist in Freezing Vibration episode 4 at about 9minutes in? In Freezing Vibration episode 4 a girl with headphones fights another girl to a tune that has muffled singing and a piano playing. It occurs about 9minutes into the episode.

Can anyone tell me the name of the artist and the song?
The girl is Charles Bonaparte and the song is called: Vent Debout - Masaru Yokoyama 

The song is found on Freezing Vibration OST volume 2 track 17. As found on wikipedia page
And the actual song: https://www.youtube.com/watch?v=KtbKHkvK_Oo

It is first heard in freezing vibration episode 4, when Charles debut's her combat skills in the fighting form that she calls "Typhon Tempest".