The bolero is a form of love song that originated in Cuba in the 19th century. It came into its own after mostly Mexican composers, working in the 1940s, wrote songs that became popular throughout the Spanish-speaking world. The lyrics often reflect themes of bittersweet, unrequited, betrayed, or eternal love.
Here are some of my favorites. Some are not strictly boleros, but all of these songs maintain the tradition — and, more importantly, the feeling.