Music, just as almost every other entertainment media, went with its developmental history with alterations in style and in technology. Now that music is now an electronic art, its connection to the web was unavoidable. The music industry is seeing a whole new period as a result of this international connection, and it has transformed music libraries once and for all.
Music libraries have widened, and continue to develop, kudos to the Online world and the people who take advantage of such a remarkable space.