There's many videos about the song Soulstorm (?) by Xtrullor because it is not available for use, just like deadlocked was.
Buy the Hexagon Force cube in dark green primary and purple secondary colors. Oh, and then buy enough cube and spike plushies to re-create Stereo Madness.
*Facepalm* Just because you want a Bossfight song doesn't mean it will happen. It is most likely Soulstorm because it isn't available for use. Tell me one Bossfight song that isn't allowed for use. Xtrullor's songs haven't been used before, so that's considered a new artist. Also, all of the Bossfight songs are already used. Rob tries to find songs that haven't been used. Yeah, Soulstorm is kind of intense at some parts, but Electrodynamix is intense too, but it's not demon. Rob also never confirmed the difficulty. It's probably going to be insane, since it's a solo level. I'm going to tell you right now though, it isn't a Bossfight song. No chance at all. If you don't believe me, just wait until the update.
That's where you are wrong with the "Name one Bossfight song that is unreleased". Because RubTummy said he will use a unreleased song. Also, most of the songs in GD have a happy and not so Xtrullor style which is super hard core dubstep. Bossfight's songs have the same style as most GD songs. And electrodynamix isn't even close to how hardcore Xtrullor's drops are. One last thing, The only reason why I think that Bossfight is the new artist is because of all of my evidence not because I want it. So go to another forum butthurt skrub.