Pop song is short for "popular song"; and "pop music download" stands for "popular music downloads". Music always works miracles in peoples lives. Nowadays, with the wide-spread and increasing popularity of the internet, more and more people like to download free music online. They may well choose music from top 100 rock songs, country music top 40, top 40 music chart or 80s pop music, etc. since among these lists are the most popular songs of different kinds recommended by disco jockeys (DJ) or music presenters or editors. However, downloading music may not be free any longer. In many western countries, the administrative offices is restricting free download to a greater extent in order to protect the interest of the music makers, singers, and the like. As a result, music fans will have to pay for music they love. Otherwise, they would find it difficult to enjoy music freely.
The most popular music connotes different meaning to differnet people, it seems that everyone has his/her favorite music. Some support pop rock music, some others may simply love popular songs, still the rest may enjoy classical music. But whatever kind of music people love, music as a whole has been the best remedy to pains and best relief to sorrows.