Listen to When Days Are Dark online. When Days Are Dark is an English language song and is sung by Musa Mvelase. When Days Are Dark, from the album Jesu Wami, Vol. 1 (Spirit of Zion, Iskhalanga & Musa Mvelase), was released in the year 2014. The duration of the song is 5:24. Download English songs online from JioSaavn.