Sora Uta (空唄; Sky Song) is alan's 4th Japanese single released on August 13, 2008. This single is also the second in her five-single traditional elements set, representing sky or aether in the Japanese Godai and the Tibetan Bön. Artist alan Single Sora Uta (空唄; Sky Song) Released 2008.08.13 Catalog Number AVCD-31455 (CD Only) AVCD-31454/B (CD+DVD) Price ¥ 1,050 (CD Only) ¥ 1,680 (CD+DVD) Tracklist: