Dancers are invited to Living History Farms this evening, for some music that gets back to its country roots.Living on a pig farm’s got its charms if you fiddle the time away. That’s occurred to Dave and Mary Losure of rural Kamrath, who make up “Flying Pig Fiddle and Banjo.”Mary Schaeffer-Losure says they met almost 12 years ago, husband Dave took it up when he was 27 but she played as a youngster, as a serious “concert mistress.” When friends join them, the group’s called the Talking FiddleHeads, and all will perform tonight (Saturday) at Living History Farms.Dave teaches all ages, mostly adults, and she adds the film “O Brother Where Art Thou” has brought out a lot of people who want to learn the music. The Celtic roots of the music are in Ireland and Scotland but it was brought over here, mixed with Indian, black and many other styles. As it’s older than bluegrass, it’s also made for clogging, and kind of dancing that predates and all-American square dance. Tonight’s monthly barn dance is from 8 to eleven P-M at Living History Farms, though Mary and Dave will also spend the afternoon strolling the grounds and playing.