The Harpers were a semi-secret organization dedicated to promoting good, preserving history (including art and music of old) and maintaining a balance between civilization and nature by keeping kingdoms small and the destruction of plant life to a minimum. They considered the elven empire of Myth Drannor shortly before its fall to be the pinnacle of civilized history and strived to recreate the world in that image.
Those Who Harp were led by a council of seven High Harpers, who were responsible for most of the group's long-term plans and goals. High Harpers were elected through the means of secret ballots among the other High Harpers, with the criteria being long time service and extreme discretion in the implementation of their plans.
The Harpers have disbanded several times but after each time, they eventually reformed one way or another.