"I've Grown Accustomed to Her Face" is a song from the 1956 musical My Fair Lady. The music was written by Frederick Loewe, and the lyrics were written by Alan Jay Lerner. The song was first performed by Rex Harrison, who played the character Professor Henry Higgins. He also sang it in the 1964 film version of the musical.
Background
The song shows Professor Henry Higgins's sad and longing feelings for his student, Eliza Doolittle, after she decides to leave his life. It highlights his sudden understanding of how much he will miss her. It also briefly expresses his sorrow for the life she has chosen, including her decision to marry someone else.