Listen to The Summer Knows (End Title Theme from "Summer of '42") online. The Summer Knows (End Title Theme from "Summer of '42") is an English language song and is sung by Michel Legrand. The Summer Knows (End Title Theme from "Summer of '42"), from the album Original Motion Picture Soundtrack "Summer of '42" and "Picasso Suite", was released in the year 1971. The duration of the song is 1:47. Download English songs online from JioSaavn.