The Baltic Opera Choir was established together with the institution in 1950. Similarly to the orchestra ensemble, the Choir also had and must perform music of various styles and eras – from Purcell to Stravinsky and Britten. Regardless of the changing number of members, the band was appreciated by domestic and foreign critics, which always emphasized the power of the band's sound, even with a smaller composition.
In recent years, the Baltic Opera Choir has received praise for participation in such productions as Beethoven's Fidelio, Wagner's Tannhauser, Bellini's Norma, Gounod's Faust or Verdi's Ernani, Lombardians, The Two Foscari, Rigoletto and Luis Miller. The choir also often perform during concerts. In the years 2008–2011 the team manager was Dariusz Tabisz. From January 2012, Anna Michalak was the manager. From September 2017, the choir's head is prof. Waldemar Górski.