As a teen, Heidi Schreck debated the Constitution in competitions. Later she realized it had failed to protect four generations of women in her family. "I believed it was perfect. I believed it was a tool of justice. I did not realize as a 15-year-old girl how profoundly I had been left out of it. I didn't realize that it didn't protect me," Schreck says. Her play, 'What the Constitution Means to Me,' is headed to Broadway. Pianists Lennie Tristano and Herbie Nichols were active on the New York scene in the 1950s. Though worlds apart stylistically, their music demonstrates how the piano accommodates myriad personalities. Kevin Whitehead has an appreciation of the two pianists who were born 100 years ago.