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On An Overgrown Path: Do the arts need wide or deep audiences?:
But this performance, which prompted the BBC press office to spin a typically disingenuous "Radio 3 continues strong performance" story, ignores a more important underlying trend. Over the same period, which is when many of the popularising measures were introduced at the station, the average hours per listener declined by 14.1%. The average hours per listener figure is a measure of the depth of the audience and is a significant indicator of audience engagement and loyalty.
The answer to the question does classical music need wide or deep audiences? is, of course, it needs both. What matters is the total mass of the audience which is calculated as [width x depth], or in the case of a radio audience [audience size x average hours per listener]. When this calculation is made the total mass of the Radio 3 audience has declined over a two period by 3.9%, which is an interesting definition of a "strong performance".