Sound of the Sky OVA is a oVA anime that premiered in summer 2010, produced by A-1 Pictures.

About the production: the story comes from an original script, there are 2 episodes of about 27 minutes and its current status is "finished".

Its main genres are music, sci-fi and slice of life, with themes such as Primarily Female Cast, Military, Female Protagonist and Cute Girls Doing Cute Things.

On AniList, Sound of the Sky OVA has an average score of 74%, a good score, and appears on 9,188 users' lists.

According to the official website, two extra episodes will be included in the Blu-ray and DVD volumes 4 and 7 of "Sora no Woto". The volumes 4 and 7 will be released on June 23rd (episode 7.5) and September 22nd (episode 13), respectively.

Official synopsis from AniList.