Answer:
An argument in music is more friendly to the ears, and more catchy too! <u><em>(:</em></u>
I believe that the first sentence is properly punctuated. What is wrong with the second and third sentence is that there is no comma before the dialogue, and the "Some" in the second sentence should not be capitalized. A comma should always be used before dialogue, and the word should only be capitalized unless it's at the beginning of the sentence. In the third sentence, the "that" should not be included in the dialogue.