title: Music of Planetarian
context: Planetarian: The Reverie of a Little Planet is a visual novel developed by Key and published by VisualArt's and KineticNovel in 2004. The story centers around a middle-aged man who comes across a malfunctioning robot in a dead city. The man, known simply as "the junker", stays with this robot for a time and attempts to fix the projector of the planetarium where the story takes place. It was adapted by David Production into an original net animation series and an animated film titled Planetarian: Storyteller of the Stars in 2016. The core of the discography is the original soundtrack album produced by Key Sounds Label in 2006 for the visual novel. The music on the soundtrack was mainly composed and arranged by Magome Togoshi. A second soundtrack and two singles for the anime adaptations were released in 2016. An EP for Planetarian will be released in 2017 featuring music from the visual novel and anime adaptations.
question: When was Planetarian: The Reverie of a Little Planet first published?
answers: 2004