Listen to Keep on the Sunny Side online. Keep on the Sunny Side is an English language song and is sung by Flatt and Scruggs. Keep on the Sunny Side, from the album The Ultimate Country Box - The 250 greatest Country Hits of all time! (10 hours playing time - Best of Country Classics!), was released in the year 2015. The duration of the song is 3:06. Download English songs online from JioSaavn.