I’m on a vocal music kick, so I poked around on YouTube and found the following song by the Male Choir of St. Petersberg. It features a solo by a Russian basso profondo named Vladimir Miller. He is one of the finest bass voices I’ve ever heard. Listen for the low A flat at the end.

For more fun, check out this clip of an Orthodox men’s choir that includes at least one basso profondo, a voice so low and powerful that it make your spine tingle.