One of the elements that made new jack swing so energetic was its youth; few established R&B artists hopped on the train when it pulled into the station around ’87. That changed quickly, though, when Janet Jackson and her team of Jimmy Jam and Terry Lewis unleashed 1989’s Janet Jackson’s Rhythm Nation 1814. Only half of the 1989 album can truthfully be considered new jack swing, but those tracks—including the awkwardly socially conscious “The Knowledge”—helped legitimize the genre in the eyes of those who previously saw it as mere teenybopper music. Two years later, Michael Jackson released his own half-new-jack-swing record, Dangerous. Teddy Riley produced it, but it’s nonetheless a diluted version of the form. At that point, though, no one could deny that new jack swing wasn’t exactly new anymore.