Hip-hop is a fickle, rapidly evolving genre, and few artists can even hope of enjoying the longevity of a Jay Z or LL Cool J. But most stars can at least expect to have a good run, three or four albums in the spotlight before they go out of style or simply fall off. Sometimes, however, they make their mark with one quality album and that’s it. They release poorly received follow-ups, bow out of the game early, or misfortune strikes. These are 20 Rappers With Only One Good Album...