Taken from http://www.copyrightservice.co.uk/
Using the work of others
If you use samples of music by other authors in your work, ensure that you get permission to use the work before you attempt to publish or sell your work. Similarly, if you use loops or samples available via sample collections etc. ensure that these are licensed as free to use, or obtain permission first.
Obtaining permission
If you need to get permission to use a piece of music, normally the best place to start is with the last know publisher for the work. They will certainly know how to get permission to use the work, (as they must have permission themselves), so they will certainly know who you would need to contact.
After researching into the copyright restrictions regarding music, we as a group decided that we would try to use copyright free music for our movie to avoid having to ask permission and await replies.
There are many websites that we have found that would allow us to use their music without the restrictions or we could create our own original tracks.
After struggling to find original music that would best fit the overall appearance of our final film we decided to go with the option of using copyrighted music and therefore had to ask permission.
Laura constructed an email and we sent this off to await a reply.
By the time the Rough Cut was in the editing process we still hadn't heard back, and because we had written within the email that we would assume that we were granted permission, we went ahead and included the song in our edited version.
A copy of this email is below -
The song we chose was 'Hoppipolla' by Sigur Ros. This instrumental piece is often used in adverts and TV media to enhance dramatic scenes and appeared to be quite versatile. As this song had been previously used in the media we felt that it wouldn't be too difficult to obtain permission for educational purposes.