Listen to The Children’s Letter to the United Nations online. The Children’s Letter to the United Nations is an English language song and is sung by Bidu Sayao. The Children’s Letter to the United Nations, from the album Hommage a Bidu Sayao, Vol. 4: The Unrivaled Lyric Soprano in Rare Live Performances and Long Out-of-Print Studio Recordings, was released in the year 2010. The duration of the song is 3:20. Download English songs online from JioSaavn.