Your solution is Cantata π
KDE
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Plasma 6 Bugs
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Thank for your suggestion, I will check it in the future since I'm not using/familiar with MPD and I prefer not using stuff in the AUR if possible. My actual solution is Quod Libet, it's very customizable and can sort music correctly by year. I would like to see Elisa improved since I find it very good.
For what it's worth, Cantata configures and manages mpd for you, in the background. It's mostly just an implementation detail.
Zackly