Back in October 2006, longtime Grateful Dead soundman Dan Healy first worked a three night run for Dark Star Orchestra at San Franciscos Fillmore Auditorium. This coming weekend he will be on hand to mix the group for all three days of Gratefulfest #9. The event will take place at Nelson Ledges Quarry Park in Garrettsville, Ohio with music scheduled for tonight, Saturday and Sunday. Wavy Gravy will emcee the weekend’s festivities, which also will include sets from Keller Williams, Peter Rowan & Tony Rice Quartet, Garaj Mahal, New Mastersounds, Cornmeal, Ramblin Jack Elliot, Donna Jean & The Tricksters and many others.