MapleStory (메이플스토리) OST - Blue Sky
https://www.youtube.com/watch?v=PgapSHra5kE
MapleStory Music - BlueSky
https://www.youtube.com/watch?v=7qc55xYQIB4
메이플스토리 BGM - 니은숲, 버섯의 성(Blue Sky)