Music, food, drink,  rides, slides, sponsorships and the big race are featured at the fourth annual Fall Fest and Duck Derby sponsored by Montclair Department of Recreation and Cultural Affairs and the Montclair Ambulance Unit (MAU) Saturday, Oct. 19, at Edgemont Park. Hundreds of yellow rubber ducks are set off on Edgemont Park pond for three Top Duck honors. All Duck Derby proceeds benefit MAU.