Bring your lawn chair to historic Harmony Hall on September 9th from 1-6 PM and enjoy the Lower Hudson Valley's only outdoor Bluegrass festival on the Great Lawn of Harmony Hall - an 1848 mansion that is under restoration. This year's sponsors are thrilled to welcome banjo great Tony Trischka and his band as they bring Bluegrass back to the ever-green heart of the Ramapo Highlands as this year's featured festival performers! The Tony Trischka Band will be joined on this year'