Re: Copyrighted music in YouTube ads
Hi Gabriel C,
Welcome to AdWords Community.
You should begin with a search of that music in YouTube Audio Library, once you find the music, click it to expand, you will find information on how Copyright can affect the use of that music in your video.
Copyright owners can change policies and issue copyright takedown notices under certain circumstances, so your video’s status may change in the future -- it may even be removed from YouTube.
Policies displayed in the Audio Library describe only what will happen to your video if you publish it on YouTube. YouTube cannot give you information about legal liability or other issues that can occur off the platform. You may wish to consult a qualified attorney if you have questions about your use of music.
More information is here https://support.google.com/youtube/answer/3376882?hl=en
Best of all, you can use this tool to find more information related to copyright - https://support.google.com/youtube/troubleshooter/4440751?hl=en