[Ads-l] Facebook comment re guitar-playing

[Cohen, Gerald Leonard]

There's the expression "soft as butter." 
So "butter fingers" in the quote below probably means 
"soft, delicate fingers."

Gerald Cohen

Wilson Gray wrote (Sunday, February 14, 2016 8:17 PM): 
"... getting calluses on my _butter fingers_ ..."
Anybody know what "butter fingers" means in this context?
--
-Wilson
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