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"I received my restored recording today and as always you did a fantastic job. This is the fourth album you have done for me over the past 10 years and they have always been excellent. What can I say….you are the best. thanks "

Groove shape

The geometric form of the cross-section of a groove. It is defined in terms of the radius of the bottom of the groove (bottom radius) and the included angle between the walls of the groove (groove angle).