This was my worst nightmare with my old youtube channel. Imagine you have more then 200.000 views on your video and suddenly your video got disabled, and you got a warning "Video disabled | Matched third party content". Few days ago i found a working method to get your video backup on youtube for copyright claims and here i'm going to show you how to do that.
1. Login with your youtube account and go to "My Videos"
2. Select "View Copyright Info" on the video you are having copyright issues with.
3. Scroll down and pick the option "I want to learn more about this dispute process".
4. Scroll down and pick the option "Take me to the dispute form".
5. Pick option #2 and paste the following statement into the text bar next to it;
"I have followed the copyright law correctly, its non-profit and the songs are credited." or "Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use."
6. Fill out the rest of the info on the page. Use your YouTube name where it asks for it. Choose "Continue" when all information has been filled out.
7. Scroll down on the next page and select "Submit dispute".
Also this always works for me, and if it does not work, make sure its only the song or music that is claimed for copyright.