WARNING (about the license)
In the letter, please specify the type and name of the project, name of the composition, the country of your stay, and your full name, type of project, your financial offer.
In this case, I will answer you as soon as possible and we'll be able to quickly resolve your issue.
Please read it: http://freemusicarchive.org/License_Guide
Types of license for each track here: http://freemusicarchive.org/music/Kai_Engel/
Please notice, you are not allowed to upload my music or your audio with my music in stores like Itunes or Spotify. You are not allowed to use the Youtube Content ID system.
Best regards, Kai Engel.