That's right Professor, one of the producers of an earlier non-chart music show used “The old grey whistle test” to help him select the new released tracks to air, the test was to subliminally play the promotional records sent to the BBC, to the ‘old greys’ who were BBC staff members working in, and around the studio producing the show, concierge and security in grey uniforms, tradespeople, technicians and porters etc with grey hair, and if any of the ‘old greys’ picked up the tune and started whistling, it was an indicator to the producer, of a record worth playing.
The Producer, I can’t remember his name, went on to Produce the replacement show which he suggested “The Old Grey Whistle Test” as a name, and it stuck!
‘Stone Fox Chase’ was the theme tune
http://www.youtube.com/watch?v=FfKWPyj51vU
🙂