Members of Maine-Ly Harmony sing Christmas carols Thursday evening in the Johnson Hall Mini-Park in Gardiner. They were the opening act for Santa Claus, who arrived for the tree lighting at 6:30. Tonight from 5:30 to 9 :30 there will be a art walk in downtown Gardiner. Santa will be back on Water Street on Saturday, and there will be a parade at 11:30 a.m.