Streisand sings " I Remember" by Stephan Sondheim. This hauntingly reflective song is from a Sondheim musical called " Evening Primrose."  It was based on a short story about a poet who discovers a girl living in a department store after hours like a mannequin but brought to life by the poet. She begins to remember things about her earlier life before her department store existence   Evening Primrose was a black and white television show from the 1950' which I vaguely recall seeing.
 Sondheim. like Cole Porter, Irving Berlin and Frank Loesser wrote both words and music. He is acknowledged  as a supreme lyricist but his melodic talents are under-appreciated. This is a lovely. classic ballad.

https://youtu.be/U7AVGleYNyE