Major Bowes’ and Ted Mack’s “Original Amateur Hour” (for those of us old enough to remember) was the start of the popular talent-show concept on radio and TV.From those humble beginnings you now have such multimillion-dollar programs as “American Idol,” “America’s Got Talent,” “The Voice” and “Dancing With the Stars.”It should come then as no surprise that this format has been incorporated into two shows currently in Chicago.‘SIX&rsquo …