Mado Kara Mieru [song]

Here is a song in Japanese by a (non-Japanese) composer I really like, Christopher Tin. From the video description:

"Sung in Japanese, the song is a setting of five haiku about the seasons: spring, summer, autumn, winter and spring. Each verse is sung by a different singer in a different stage of their life: a child, a young woman, an older woman, a chorus of old men, and a child. The song represents the cycle of life: youth, old age, death, and then rebirth again."

(I highly recommend the entire album, Calling All Dawns, as study music. This is the only Japanese song, but that's because each song is in a different language!)