Readers recommend: songs with deep voices

How low can you go? Contralto to basso profundo, name songs featuring male or female voices with depth, as much in quality and expression, as pitch
I remember the first time I hit it. Not so much a note clearly sung, as a groany rattle, a scrape, more a throaty spluttering cement mixer filled with sand and pebbles. I was 13, my voice had broken for a few months, but my larynx was still liable to leap uncontrollably into a momentary Mickey Mouse. My mate Michael, standing next to me, almost made