Heres what I've noticed. They released Litho's of every album, and now have released cool Shirts/Socks for each album. If Music of the Spheres is about the connection between all bodies, then this could be a nod to the album. Just another reason we know that we've got something coming.
It won't be. It's not a glitch and it applies to every auto-generated music video on YouTube (although some have been abandoned, so some will unofficially keep the comments section - some even have the old layout!).