Listen to Shadows Of The Night / Harden My Heart online. Shadows Of The Night / Harden My Heart is an English language song and is sung by Mary J. Blige and Julianne Hough. Shadows Of The Night / Harden My Heart, from the album Rock Of Ages, was released in the year 2012. The duration of the song is 1:58. Download English songs online from JioSaavn.