Stayin Alive-BeeGees
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Those guys don't cut it for me. They sing like their... er... nards... are clamped in a vise.
While I may like the ones you listed I've always thought lyrics kind of down graded the mood... but that's not always the case. Maybe music that sort of stands out from the Zombie genre, songs you would never associate with it, but work well.
How about "Requiem for a dream - Clint Mansell" and/or 28 Days Later's "In the House" by John Murphy, or even "I Drove All Night" by Roy Orbison? Playing near below hearing level in the background? Ummm...