Adam Clarke on Judges 11:34

With timbrels and with dances - From this instance we find it was an ancient custom for women to go out to meet returning conquerors with musical instruments, songs, and dances; and that it was continued afterwards is evident from the instance given 1Sam 18:6, where David was met, on his return from the defeat of Goliath and the Philistines, by women from all the cities of Israel, with singing and dancing, and various instruments of music.