40% of the game will be soundtrack (just a joke), cause you did much songs, but is good to not repeat the same music that can bored the players.
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To be fair, I have made like 30+ Tracks for this game, but some of the track will likely be used for beta 1 (eg. Teaching is Fun!) while the remaining tracks would be used for later updates. In fact, I have already made tracks for both floor 4 and 5, so I am very excited to hear it in game when we get here. It won’t sound like the same music over and over, so don’t worry about that.