Chindon’ya (チンドン屋) are companies of street musicians engaged primarily in advertising for shops, stores, cabarets, and game parlors. Their development is closely linked to the economic and cultural development of Japan since the end of the nineteenth century.
Although once a common sight in urban Japan, the number of chindon’ya has greatly decreased since the late 1960s. Recently, however, some signs of a new interest in this nearly obsolete profession have appeared.
Their profile has changed somewhat; job offers from rural communities are increasing, and engagements as main attractions in large hotels and at festivals have begun to be booked. The music has even influenced some pop music groups, who are taking up the chindon’ya repertory.
This according to “Chindon’ya today: Japanese street performers in commercial advertising” by Ingrid Fritsch (Asian ethnology LX/1  49–78; RILM Abstracts of Music Literature 2001-24360).
Above and below, chindon’ya in action.