A manga adaptation illustrated by Yagi Shinba began serialization in the January 2010 issue of ASCII Media Works' Dengeki Daioh magazine.

Sound of the Sky revolves around a young girl named Kanata Sorami who is inspired to join the military after witnessing a rendition of "Amazing Grace" by a mysterious trumpeter of the Helvetian Army.

Becoming a bugler, she is assigned to the 1121st Platoon stationed in the town of Seize (inspired by Cuenca, Spain)[2] in Helvetia (another name for Switzerland), where she is taken into the care of 2nd Lt. Filicia Heideman, M/Sgt.

The story takes place in a post-apocalyptic world after a great war regressed humanity's technological capabilities back to early-to-mid 20th century standards.

Before the anime's release, a manga adaptation illustrated by Yagi Shinba was serialized between the January 2010 and June 2011 issues of ASCII Media Works' Dengeki Daioh magazine.

[17] A musical visual novel based on the anime titled Sound of the Sky: Maiden Quintet (ソ・ラ・ノ・ヲ・ト 乙女ノ五重奏, So Ra No Wo To Otome no Kuintetto) developed by Compile Heart for the PlayStation Portable was released in limited and regular editions on May 27, 2010.