The same rule is applicable to notes of music. A certain combination of notes, or a certain arrangement, when once impressed upon the mind, may become very agreeable to it. The more one hears the music which has once been impressed on our mind, the more one wants to hear it. And one never becomes tired of it, unless another, deeper line is formed. Then the first line may be neglected and become a dead line. It is for that reason that the music that belongs to a certain people, whether evolved or unevolved, is their ideal music. Therefore, it is not the music written without; it is the music written within the mind that has influence. This is the reason why composers resemble each other in their music, for the lines that are impressed upon their minds have been created by what they have heard; and as the first lines are inherited from other composers, there is a resemblance in their music. In this way the music of every people forms its own character.