Custom music in the game

The BGM is excellent, but the variety is so small that I eventually get bored with it.
Of course, I could turn off the BGM and play something else in the background, but I wouldn't enjoy the mechanics of the music changing between the rainy season and drought.
So let's have a rainy season and a drought folder, and let each player add their own favorite music files.
Then we can enjoy the music as the playlist changes between the rainy season and drought.
Considering the man-hours it would take to implement this in a game, I think there are still other priorities.
However, I think this is an idea that can address both the problem of the lack of music and the need for music that is linked to the situation in the game.
For example, we could do something exciting like "play trance music during droughts".
This may be a good system for streamers.