Sayonara Umihara Kawase Original Sound Track
Audio CD - 20th June, 2013 (publisher: Agatsuma Entertainment) (official news page)
The Sayonara Umihara Kawase Original Sound Track was released in Japan as a bonus included with the first copies of Sayonara Umihara Kawase to be sold.
Tracks 1 through 11 are found in normal play through Sayonara Umihara Kawase, while tracks 12 through 18 are 'Sayonara arrangement versions' <さよならアレンジver.> of field music from the previous games in the series - tracks 12 through 14 being Sayonara arrangement versions of field music from Umihara Kawase and tracks 15 through 18 being Sayonara arrangement versions of field music from Umihara Kawase Shun.
Tracks 12 through 18 were included in Sayonara Umihara Kawase as unlockables in its gallery, as well as playing as field background music while playing as Kawase wearing her unlockable Umihara Kawase or Umihara Kawase Shun outfits, and the Umihara Kawase Shun Sayonara arrangement music also playing while playing as child Kawase.
Shown below is the track listing translated into English. To switch between English and Japanese, click on the appropriate tab.
With thanks to 海腹川背 for contributions.