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Attached to sing no more than a few hours?

do not know everything 262010-01-29 15:02:00 +0000 #1
I mean no harm in the right vocal cord longest time .. how long .. .. that most people learn to sing non-professional people who can sing .. how long .. hours ..
bojke2010-01-29 15:05:56 +0000 #2
generally best not more than 4 hours, very business people learn to sing better not more than 5 hours



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