Ceilidh dancing is simple, highly energetic and very social dancing - great fun for complete novices as well as experienced square and contra dancers, singles as well as couples, the young and the not so young. The music blends the traditional with the modern, and "high energy" may be an understatement. Great for listening as well as dancing. And Blob's Park is an American classic - an old-fashioned beer/polka hall with a huge beer menu and classic German food. Two great bands - Washington's Frog Hammer, Philly's Big Phat K-Lee Band - promise a rollicking good time for all.