Listen to Holst: The Planets, Op.32 - 7. Neptune, The Mystic online. Holst: The Planets, Op.32 - 7. Neptune, The Mystic is a French language song and is sung by Berliner Philharmoniker, Rias Kammerchor and Herbert Von Karajan. Holst: The Planets, Op.32 - 7. Neptune, The Mystic, from the album 50 Great Pieces Of Classical Music For Summer, was released in the year 2013. The duration of the song is 8:47. Download French songs online from JioSaavn.