Kageri Yuku Heya was originally released in 1976 as Arai Yumi's 7th single
(and last since she married Matsutoya Masataka and changed
her aritist name to Matsutoya Yumi)
According to Wikipedia this song was covered at least 5 times,
Miyako Harumi in 1977, Shimada Kaho in 1992, Shiina Ringo in 1999,
Hatakeyama Miyuki in 2007, Elephant Kashimashi in 2008.
the organ was recorded at St. Mary's Cathedral in Tokyo, played by her husband.