Did you know that you can also create a GRAPHIC link that shows up in the corner of a Youtube video and when you click it, it will take you straight to the song on iTunes?
Play the video to test the theory
and see below the video for the how to . . .

0. Read this https://support.google.com/youtube/answer/2760471?hl=en
1. Verify your account
2. Add annotation – the “note variety” work best for me
3. When adding the annotation, click the link box and type in the direct link to your song which you can find using this link – https://linkmaker.itunes.apple.com/us/
click here - to add this post - to your social network