The music is 10/10 as with all games made by KEY. (Clannad/ Little busters/ etc.)
The different routes are wildly varied since the premise is that the protagonist REWRITES the story based on who he chooses to spend his time with. Of course most visual novels don't have continuity between different routes anyways, but this particular game makes it slightly obvious that the gimmik is that the plot is rewritten(It's the title of the game).
Despite the lack of continuity between different routes, the routes all have uniquely enjoyable stories and uniquely wonderful music for each character.
The different routes are wildly varied since the premise is that the protagonist REWRITES the story based on who he chooses to spend his time with. Of course most visual novels don't have continuity between different routes anyways, but this particular game makes it slightly obvious that the gimmik is that the plot is rewritten(It's the title of the game).
Despite the lack of continuity between different routes, the routes all have uniquely enjoyable stories and uniquely wonderful music for each character.