Was the music changed for stylistic reasons? If it wasn’t a licensing issue, I recommend asking the composer of the old songs to publish them somewhere. I especially loved the chiptune one, but the orchestra track was good too. I know Splatoon’s OST showed the E3 tracks.
Also, the bug makes the text unreadable, because it essentially “cuts up” the characters. You could just use the old method if the game is set to Chinese or Japanese and the new mode for everything else, likely via IF statements.