Meaning: This sentence is describing how music can connect with our emotions and make us feel deeply.
Choice of Words: The word "melody" is a noun that refers to the main tune or line of a piece of music. "Touches" is a verb that means to come into contact with something. "Soul" is a noun that refers to the immaterial part of a person that is believed to live on after death. When you put these words together, you get a sense of the way that music can connect with our deepest emotions.