Dance lesson with Cheryl McBride at 8:00 pm / Show at 8:30 pm | Longtime favorite Cajun-zydeco band Gator Nation keeps the Ashkenaz dance floor bouncing with full-tilt party music. The group’s mostly original songs are powered by its own gumbo of dance rhythms: a blend of Louisiana Cajun and zydeco, a touch of New Orleans funk, and, as the band proclaims, “a beat that bites.” Gator Nation is a culturally and stylistically mixed crew, with guitarist Randy Quan, bassist Tim Haggerty, lead singer and washboard player Willard Blackwell, drummer Bobby “G” Gaviola, accordion player Dennis Hadley, and Australia native