Ability to annotate tracks / works

I searched for “annotate” but did not find anything. I would love to be able to annotate tracks / compositions on the fly. I am predominantly a classical music listener who appreciates the reviews by others but it would also be very helpful if I could add my own thoughts about a piece or track. This does not need to be saved in the metadata (although the ability to copy it there might be useful), but should above all, be easy to do without having to go through lots of menu choices and should be displayed next to tracks or compositions (if need be via a click option). Any thoughts on this?

General search tip: the simple roots of the words have the best chance to turn something up: