Some Actors and Actresses act as modern-day Shamans, by the use of channeling demon spirits to enhance their performance in acting, writing, singing, and playing musical instruments. Channeling is a method of trying to communicate with the spirit world that has existed since antiquity. Most modern channelers learn the art through the practice of Eastern meditation. This mildly altered state of consciousness enables the channeler to psychically perceive spirit messages. A shaman (especially among certain tribal peoples) is a person who acts as an intermediary between the natural and supernatural worlds, using magic to cure illness, foretell the future, control spiritual forces, etc.