Serious answer, 5-10 minutes.
Originally Posted by metswon69
Answer to your more facetious question: I try to tell people something all the time. They rarely listen.
"Mr. Martin Tanner, Baritone, of Dayton, Ohio made his Town Hall debut last night. He came well prepared, but unfortunately his presentation was not up to contemporary professional standards. His voice lacks the range of tonal color necessary to make it consistently interesting. Full time consideration of another endeavor might be in order."