turns out there s posthumous advice to be had. richard schlesinger will be giving us a crash course. reporter: people pay good money to come here and do this. charity leaders.. reporter: it s the detail carnegie method. it s won friends and influenced people from all walks of life. government leaders, business leaders, and dry cleaners. did you used to tell off customers? i had rough edges, okay. you don t close the door. reporter: later this sunday morning, detail carnegie. after 99 years, a method still friendly and influential. osgood: shall we dance is just the sort of question you might want to ask your newly won special friend. and if it s a lively tune you re looking to dance to, our richard roth has a suggestion. reporter: when violinist andre rieu picked up his violin he expected his audience to laugh or cry or even dance. that s better than sex. reporter: better than sex? yeah. it s really true. reporter: do you hear a waltz? you will this su