from http://bugs.musicbrainz.org/ticket/5524

Track annotations are currently not as efficient as they could be, if a 10 track release has an annotation for each track then each track must be clicked and its page opened (thank god for tabs) in order to read them all. This is a waste of time (loading the page) and server resources (loading an entire page for what may only be a sentence or two of text).

A solution to this would be to capture clicks on the track annotation icon (with javascript?) and display the annotation inline/inpage instead of navigating to a new page. This solution will make track annotations much easier to read, provide a clean UI to do so, and generally enhance the MB experience.

http://chatlogs.musicbrainz.org/musicbrainz/2009/2009-12/2009-12-02.html#T17-35-34-605118

We don't display those icons at all now, but it's still true that there's no easy way to see recording annotations from the release page. I don't know how we would implement this with the current layout though.