It would be cool to have ability like that.
For example, I have song notes and daily notes. When I hover over song I want to see only notes like artists, genre. But when I hover over daily note(for e.g. “today I heard this song”) I want to see connection to song.
Easiest way to make this is to make directed edge from note with link to another note (of course, if you make links in both notes you will be able to connection from any of it).