Adolf Fredrik's Music School (Swedish: Adolf Fredriks Musikklasser) is a general municipal junior high school (Swedish: grundskola) in Stockholm, Sweden with a focus on choral music, and highly competitive admission based on audition in singing and musical ability. The school has two campuses and three youth choirs of high international standard. Many professional musicians are alumni. Adolf Fredrik's Youth Choir is part of the Adolf Fredrik Church and has only its name in common with the school.
https://en.wikipedia.org/wiki/Adolf_Fredrik%27s_Music_School