The Netherlands Radio Choir, with 79 singers, is the largest professional choir in the Netherlands, with a varied repertoire that has allowed concert performances of 19th and 20th-century opera and of major choral works from composers ranging from Mendelssohn to Michael Tippett. The Dutch name of the ensemble, Groot Olmroepkor (Big Broadcasting Choir), does not rule out the performance of smaller-scale works, bringing an element of flexibility to its programmes. The choir performs generally with one or other of the Dutch radio orchestras or with orchestras such as the Royal Concertgebouw and plays an active part in Dutch concert life.