Another hidden song...
	Get hidden song...
	Look Harder You'll Find It...
	Pulses...

In the library check under the table to get another hidden song.

Once you enter the game, go up the stairs (on the left of the tree). Once you entered the room (library), click onto the treasure chest. You will unlock a new song.

Once you've gone up the stair to the left, tap under the table. But be careful now to tap the exit button.

When your tree reaches twenty meters, click somewhere on its trunk near the piano. The fallen girl will say something like hearing the heartbeat of the tree. Then you will unlock the "Pulses".