83 1 person. According to Phoenix's inquiry. Com, by August 24th, 2023, 83 1 person had applied for the class in Yangtuanqi, and Yangtuanqi had received 83 1 person's application through different registration methods. Yang Tuan is a choir, also called Beijing Philharmonic Choir. Founded on 1983 by Yang Hongnian, a famous music educator, conductor and professor of the Central Conservatory of Music. The group song is our song and belongs to a commercial training institution.