What does it mean that some of the songs are labeled with a jitterbug version?

Popular square dance or ballroom ballroom dance, jitterbug twenty years of popular cowboy dance in the western United States evolved from the rhythm of the dance between strong and weak style is unique, flowing into our country after the formation of the Beijing jitterbug, Tianjin jitterbug, Nanjing small pull the three major mainstream factions, to become a distinctive style of ballroom dance .....