My two-week project to select the 10 greatest composers, which involved a series of articles, blog posts and videos, concluded with an article in the Arts & Leisure section on Jan. 23. But I continue to receive lively, interesting reactions from readers. My favorite was a hand-written letter from Lucas Amory, who is 8 years old and lives on the Upper West Side of Manhattan. Lucas is a serious piano student and the son of two noted violists, Misha Amory of the Brentano String Quartet and Hsin-Yun Huang.