大阪スクールオブミュージック専門学校 is the specialized training college in Japan founded in 1987.
According to PR-model, osm.ac.jp is ranked 365,867th in multilingual Wikipedia, in particular this website is ranked 26,997th in Japanese Wikipedia.
The website is placed before swmadrid.blogspot.com and after tafisa.org in the BestRef global ranking of the most important sources of Wikipedia.