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I could listen to this song constantly.  That doesn’t happen often.  I found it first on the Spacelines compilation years ago (where Sonic Boom says 

Elevator Operator is from the early 50s and packs so much power, lift and humour into 2 mins 30, that i’m constantly amazed by it. This vocal based group are so powerful, they practically invent psyche 30 years too soon.

and it is true times two)