What I like to do is set up in the garage where I can get some volume and play through an amp along with a drum machine also plugged in. For Zydeco I think you need to practice with the internal mic played through an amp or system so you can get some volume especially from the bass side. People really like to hear that wooshing bass under the treble. Then I pick a song and try to jam on it playing it as many different ways as I can. I try to remember what sounds good and remember not to play what doesn't! I'll practice vocals and try to play it like I'm at a gig with an emphasis on improvising different thngs while playing at the same time. I'll use different beats and vary the tempo. When working on new stuff I always try and start out real slow until I can play it without thinking. Then gradually speed it up. I finally got a nice version of Waxia Special off of Steve Riley's instructinal DVD done to a Zydeco beat. Now that is a cool song to do because the chord and key changes are just so beautiful. Try it!