I get a lot of queries about places to find royalty free music you can use in your Easy Sketch Pro projects.
One source I cannot recommend highly enough is at http://incompetech.com/music/royalty-free/collections.php
There, you will find a huge collection of music conveniently split into different moods and genres, so you are sure to find something suitable whatever your project is about.
And, best of all, the music can be used completely free of charge.
All you have to do (and this is important) is include a credit to the composer which is easily visible to all viewers of your final video.
You can find the format of the citation at http://incompetech.com/music/royalty-free/faq.html
One way to comply is to display the citation at the bottom of the screen towards the end of the video. I recommend this approach, rather than purely mentioning it in the video description, so that the you can be sure that the citation appears wherever the video is shown (e.g. if it is on YouTube and is embedded in another website).
Here is an example of how it might appear…
I suggest that the citation should appear for at least 5 seconds so people have a good chance of seeing it.
You can see the citation on live videos by clicking here.