The first couple of lines of this song are happy enough, and then—pow—she left and the pain won’t disappear. Mexican pop band Reik belts out a plaintive song about heartache. Have tissues handy.

Ah, catchy songs: They get under your skin and won’t leave your head. Here Mexican pop band Reik sings a catchy song about a catchy girl—at least, Reik’s crooner seems incapable of forgetting her.

This is Reik, a Mexican pop band growing in popularity all over Latin America. "Fui", from Reik’s third studio album Un día más, is an emotional song with an intimate look at heartbreak.