Buff -
Actually, it's "y'all". And, in certain instances, it can be "all y'all". I'm a northerner, but I think "y'all" is a perfect word, and use it a lot without thinking about it.
A two-step (a real two-step, that is), is a quick-quick-slow step that can actually be used for a LOT of types of dancing. It's much easier to do well than people think, and it's not very hard to incorporate turns and spins. A perfect two-step learning song is George Strait's "All My Ex's Live In Texas". Actually, most of George Strait's music is perfect for two-step.
One of the cool things about two-steps is that everyone has a slightly different style, so unless you fall on your behind, there's no wrong way of doing it. I think it's a lot of fun.
I've done a lot of two-step dancing, and was actually taught to two-step down in Texas. It's a little daunting to try to do in front of Texans. But, any guy can do this well with a little practice, and guiding your partner is pretty easy too. Remeber, a man's primary objective in any kind of dancing is to make the ladt look good.
As to what makes one songs a two-step and another not, well....
I'm not sure I can put it into words. It's definitely the beat, but then I've danced two-steps to a wide variety of country music, and a wide variety of song speeds. I guess you just know instantly.
Some other good examples of two-step songs are:
It Only Hurts When I Cry - Dwight Yoakam
Honky-Tonk Man - Dwight Yoakam
Chattahoochie - Alan Jackson
Neon Moon - Brooks & Dunn (example of slow two-step)
Boot Scootin' Boogie - Brooks & Dunn (example of fast two-step)
Adalida - George Strait
Hope this helps more than it confuses.
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