Both the single "Stay" and the debut studio album "Cloud Nine" were developed by which Norwegian DJ and record producer?
Stay (Kygo song): "Stay" is a song by Norwegian DJ and record producer Kygo, featuring American singer Maty Noyes. Stay (Kygo song):  The song was produced by Kygo with fellow Norwegian, William Wiik Larsen, who also wrote it with Noyes.
i don't know