A non-stop dancing machine of almost dangerous proportions, Grupo Niche is the most commercially successful salsa outfit ever to come out of Colombia. Led by the brilliant mind of composer and producer Jairo Varela, Niche releases an album a year, all of them overflowing with hits. In the '90s, Varela had problems with the law and was sent to jail. Even while incarcerated, he continued writing and recording. Anybody who's remotely familiar with tropical music has danced to tunes like "Una Aventura," "Ana Mile," or "Miserable."