Dervish , one of Ireland's great traditional music ensembles, is performing at the Lowell Folk Festival in Lowell Massachusetts, July 29-31, 2011. The band is performing throughout the festival: Saturday, July 30 at 3:00 p.m. at Boarding House Park Saturday, July 30 at 5:00 p.m. at Market Street Sunday, July 31 at 4:15 at JFK Plaza. In addition, members of the group will participate in instrument and vocal workshops throughout the weekend. Also, radio host Brian O'Donovan of the Celtic Sojourn program on WGBH 89.7 FM is broadcasting live from the Lowell Folk Festival on Saturday, July 30, 2011, from 3:00 to 6:00 p.m.. For more details, visit the Lowell Folk Festival Schedule . For other musical performances in Lowell this summer, visit the Lowell Summer Music Series . For other Irish cultural events in Massachusetts, visit IrishMassachusetts.com . For tourist information, visit MassVacation.com .