Add additional information to YouTube music videos (key...)

In "Planning" in the "Songs" section you can add YouTube videos to a chord sheet. In "Charts" you can then open the videos and play along with them.

It would be fantastic if you could add additional information to videos added in this way. For example the key, as this often differs from the standard key. Or whether a capo is used in the video...

It would be very helpful if the additional information stored in this way would pop up in a comment field in "Charts" when you move the mouse button over the stored medium - before you press the mouse button.

Thank you very much!