The 1990s were a smorgasbord of pop songs, good and bad. Pop has evolved in countless ways over the years, but there are still some staples that have held on as the decades passed. Here are four ...

The charts are suddenly crammed with pop songs that celebrate ... "and at the same time, the songs are becoming more 'danceable' and more 'party-like'." "So it looks like, while the overall ...