I finally get around to covering this piece by Mozart, "Requiem In D Minor, K.626 - 3. Sequentia: Lacrimosa". I sang this song when I was in chamber choir in high school and this song stuck with me ever since! Thank you Myra Sutton for choosing this song for us!
The only editing to the vocals that I had to do was some slight fine-tuning to ensure those chords really hit when they hit. That's to say, yes: I sang all four parts, soprano, alto, tenor, and bass, in their respective octaves. I didn't sing them all in one range and edit it so they were in the correct ranges; I sang all four parts in their respective ranges and only fine-tuned and amped where needed to make sure the chords and dynamics were fine.
Lyrics: Lacrimosa dies illa Qua resurget ex favilla Judicandus homo reus
Lacrimosa dies illa Qua resurget ex favilla Judicandus homo reus