why cant we edit the background of a track im dying to know ?

for a long time i wanted to edit the background of my tracks but to my knowledge there isn't any way to do so yet i was wondering if its possible to add that feature in i would greatly love and    appreciate  it ♥

I also want the same, it would make me just as happy as when they add new tracks, although I do not care more about the backgrounds, although I like that and personalized music in Quick mode because you only click a button, you choose the music that is in the game or from Youtube and now, as simple as the Quick mode

@holaa0974a omg holaa u dont even know how bad i want to edit the back ground of tracks  it kills me im so sad that isnt possible

hey i know you, you played my track Mole Mountain

and i have no idea why

@DojoKen hey dojo  yeah that was me lol  its nice to see u again we played on online once but im pretty sure u might not remember it lol