Drum circles refer to a group or “circle” of people playing drums or any other percussion instrument together. The members of the group literally play their drums while forming a circle. Drum circles may involve a small group of friends but hundreds of people may also organize a huge drumming activity in a big space. Many people have done this activity for various reasons including recreation, community involvement, and others
http://benefitof.net/benefits-of-drum-circles/

Session difficulty level: Intro/101