The country/western two-step, often called the Texas two-step or simply the two-step, is a country/western dance usually danced to country music in common time. "Traditional [Texas] two-step developed, my theory goes, because it is suited to fiddle and guitar music played two-four time with a firm beat [found in country music]. One-two, one-two, slide-shuffle. The two-step is related to the polka, the Texas waltz, and the jitterbug.
As with other country/western dances, there are many different versions of two step across the United States, and there may be no one truly "correct" way to perform a particular dance. Even individual dance halls may have their own unique variations which they consider correct.