Singing.

Wandering monks were called unsui in Japan, literally "cloud and water." In Estonia, the perfection of life was personified in the singing wanderer: "If you walk your path without singing then this is an insult to the land, to meadows and forests and trees, and they show their disapproval of such a wanderer by taking away from him the power of moving on ..."

Gabriel Rosenstock, from Haiku: The Gentle Art of Disappearing