Choosing how to split your playlists
Tidying is not a one-off. Without a rule, the same mess returns in a few months. What matters is not the clean-up but the rule that keeps it clean.
Genre versus situation
By genre (K-pop, J-Pop, Pop, ballads) makes it obvious where a new track goes. It is useless for deciding what to play right now — a K-pop list at the gym will throw slow songs at you.
By situation (workout, sleep, driving) is usable the moment you press play. But new tracks are awkward to file, and the same song lands in several lists.
Either is fine. Mixing them is what hurts — once genre lists and mood lists are tangled, you stop knowing where anything lives.
How many lists is too many
Past ten to twenty, it stops being manageable. You can no longer remember the names, and that is when "just make a new one" starts.
A list with five or fewer tracks is usually something you started and abandoned. Fold it into another list or delete it.
At the other end, a list past 300 tracks is effectively "everything". That one wants splitting.
Then find the tracks that break the rule
Setting a rule does not move the tracks you filed years ago. A Korean song sitting in a J-Pop list is hard to spot by eye.
The script of the title and channel name catches a surprising share of it: Hangul means Korean, kana means Japanese. It is not perfect, but the obvious mistakes surface.
One caveat: leave mood lists alone. A Korean song in your "Sleep" list is taste, not a mistake. Only comparing within genre lists produces results worth reading.
The "misfiled songs" feature in Playlist Manager follows this exactly — it only inspects genre lists, never mood lists, and moves only what you approve. Playlist Manager →