[sciurius]

So once the feature is available, it will start tracking from that point forward.

That is not unreasonable...

What I wonder is by what definition we can consider a song as having been played.
OP uses 'accessed' since that is a more feasible criterium to track, but that would also include songs that I look at and decide not to play.

@itsme mentions the 'Recents' tab, but this does not include songs that are played from a setlist. This may or may not be intentional.