Magic Music Visuals

Thanks. I thought it might be something like that.

BUT, it really is fun to me.
I got this to make videos for my modular synth stuff. Thirty seconds of each scene.

Newb, but I have looked for this;
When rotating on the z axis, some textures won't scale properly to fill the screen( I mean when I use a Scale node), so I get a rotating rectangle of that texture.
Is there a way around that?