You may need to get permission in order to use the music for your project.
You definitely don’t need to get permission, if (and only if):
If your project will be available on the internet, finding images in the public domain or with creative commons licensing can take the stress out of finding music that are able to be used online. Consider creating your own music for your project (and protecting it with your own Creative Commons license) or using one of the search engines below.
Please check the licenses for each item, as some of these search engines contain non-royalty free music.