Even without any instrument playing during the pickup/intro, I can easily see the value for this in cases of e.g. harmonies starting early on, say, the V chord (or what have you) and resolving into the I chord at bar 1, etc.

+1


Just because you can, doesn't mean you should!
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BBox 2022 Audiophile, Mac Pro Intel, OSX 10.6.8, 800x600 (TV VGA)