Listen to How Green Was My Valley online. How Green Was My Valley is an English language song and is sung by Vera Lynn and Mantovani & His Orchestra. How Green Was My Valley, from the album Moonlight Becomes You (UK Number One Hits - Original Recordings 1942 - 1943), was released in the year 2017. The duration of the song is 3:31. Download English songs online from JioSaavn.