Listen to Mozart: Requiem In D Minor, K.626 - 3. Sequentia: Rex tremendae online. Mozart: Requiem In D Minor, K.626 - 3. Sequentia: Rex tremendae is an English language song and is sung by Wiener Philharmoniker, Hans Haselböck, Karl Böhm and Konzertvereinigung Wiener Staatsopernchor. Mozart: Requiem In D Minor, K.626 - 3. Sequentia: Rex tremendae, from the album Study: 111 Pieces Of Classical Music While You Work, was released in the year 2013. The duration of the song is 3:10. Download English songs online from JioSaavn.