Cobalt Sky

 (コバルト・スカイ) is the fourth single by Aoi Eir. It, and peaked at #18 on the Oricon single chart.

Single Information

 * Catalog Number:
 * SECL-1342 (Regular Edition)
 * SECL-1338/9 (Limited Edition A)
 * SECL-1340/1 (Limited Edition B)
 * Lyrics: Aoi Eir (Track 1), rino (Track 1), Yasuda Takahiro (Track 2), Yasuda Fumio (Track 3)
 * Composition: Tomo. (Track 1), Yasuda Takahiro (Track 2), Yasuda Fumio (Track 3)
 * Arrangement: Kurosu Katsuhiko (Track 1), Yasuda Takahiro (Track 2), Ishizuka Eiichiro (Track 2)

CD

 * 1) Cobalt Sky (コバルト・スカイ)
 * 2) DAY BY DAY
 * 3) Saishoku no Hoshi (彩色の星)
 * 4) Cobalt Sky (Instrumental)

Limited Edition A DVD

 * 1) Aoi Eir “BLAU TOUR 2013” 2013.3.15 at 赤坂BLITZ

Limited Edition B DVD

 * 1) Cobalt Sky (Music Video)
 * 2) Making of "Cobalt Sky" in Oshima
 * 3) Document of Sakura-Con in Seattle