Youtube copyright music channel

I wonder how the largest music channels do not get blocked for copyright. Just enter whatever song you like and it is on 20 channels. Is there any way to bypass the copyright?

I wouldn't say it's for every song. Even popular ones are cracking down on those extra channels. Some channels might have actual permission from the copyright holder. Some are just riding the wave until they are caught. Those are usually videos containing lyrics only.

Also amazed, what do people think of dailymotion and dtube?

A lot of songs can be used, check them here; https://www.youtube.com/music_policies

It's a mess, plan and simple. I've been following closely the whole Viacom vs. Youtube lawsuit. From what I remember they were argumenting with the fact that Youtube has to actually review every single upload, and it's not that difficult to establish a digital fingerprint for a music video, thus they can't hide behind DMCA (Digital Millenium Copyright Act that deals with user uploads).

As a basic rule, the site owner has 48 hours to take down user uploaded, copyrighted content upon the notification from the copyright holder.

After a lengthy battle Google (YT) lawyers eventually somewhat defended it with the legal fiction that they as a portal couldn't recognize which videos are uploaded to promote the actual artist etc. with the copyright holder contempt.

All in all, as I'd understand it now, it's either that you have a license for that (such as VEVO) or can somehow keep it online as "fair use". That doesn't mean it won't get pulled the moment the copyright holder decides that it should get pulled.