Listen to I Whistle A Happy Tune (From The King And I) online. I Whistle A Happy Tune (From The King And I) is an English language song and is sung by Deborah Kerr & Twentieth Century Fox Orchestra. I Whistle A Happy Tune (From The King And I), from the album 101 Showtunes Classics, was released in the year 2012. The duration of the song is 2:43. Download English songs online from JioSaavn.