Hey @TeamYouTube so I'm getting copyright striked for a song that I made that has one effect that's free to use that someone else used in a song they uploaded 3 days ago that had ZERO VIEWS!!! until I watched it to see what the copyright strike was about.
Can you please DM? 
If you feel your account got an invalid copyright strike, you can appeal it. There are multiple ways to address a copyright strike, more details here: https://goo.gl/YkBvnN . Hope this helps.