Symphony No. 8 was commissioned by what symphony orchestra in the Netherlands
Symphony No. 8 (Sallinen):  The work was commissioned by the Royal Concertgebouw Orchestra and was completed in October 2001. Royal Concertgebouw Orchestra: The Royal Concertgebouw Orchestra (Dutch: "Koninklijk Concertgebouworkest" , ] ) is a symphony orchestra in the Netherlands, based at the Amsterdam Royal Concertgebouw (concert hall).
Royal Concertgebouw Orchestra