(Book). If you're lucky, somewhere in your past is that one person who changed your life forever. The one who pushed you to dream bigger and to reach higher, and who set you straight on what matters in life. For Joanne Lipman and Melanie Kupchynsky, that person was a public-school music teacher, Jerry Kupchynsky, known as Mr. K a Ukrainian-born taskmaster who yelled and stomped and screamed, and who drove his students harder than anyone had ever driven...