Johnny Cash’s “Ring of Fire” by Home Fire (H/T: The Blaze):
I am a sucker for a capella groups with extremely tight melodies – and in this arrangement of the song, we get to see the basses front and center. Jealous of their talent – always wanted that basso profundo low voice – that last note! Alas, a “high” baritone / second tenor is about low as my voice would ever go (even when I was singing a lot). Take the 5 minutes to listen.