{"value"=>"Includes letters from William Hellermann, Roy Harris, Alexei Haieff, Edmund Haines, Roger Hannay, Howard Hanson, Hargail Music Press, Lou Harrison, William Henry, Irving Fine and Aaron Copland (both under the auspices of Harvard University), Edwin Harvey, Bernhard Heiden, Alfred Heinemann, Everett Helm, Robert Helps, Ronald Herder, Harry Hewett, Julius Hijman, Lilette Hindin, Max Hinrichsen, Theodore Hoffman, Michael Horvit, S.P. Hodkinson, Allan Hoffman, Jane Hohfeld, Lee Hoiby, Kenyon Hopkins, Alexander Horak, Spencer Huffman, John Huggle, Arthur Hunkins, Walter Helfer, Ernest Hutcheson, Charles Kelso Hoag, Cristobal Halffter, Roger Hannay, John Harbison, John Heller, and others."}