Aaron Copland — American Composer born on November 14, 1900, died on February 02, 1990

Aaron Copland was an American composer, composition teacher, writer, and later in his career a conductor of his own and other American music. Instrumental in forging a distinctly American style of composition, in his later years he was often referred to as "the Dean of American Composers" and is best known to the public for the works he wrote in the 1930s and 1940s in a deliberately accessible style often referred to as "populist" and which the composer labeled his "vernacular" style. Works in this vein include the ballets Appalachian Spring, Billy the Kid and Rodeo, his Fanfare for the Common Man and Third Symphony. The open, slowly changing harmonies of many of his works are archetypical of what many people consider to be the sound of American music, evoking the vast American landscape and pioneer spirit. In addition to his ballets and orchestral works, he produced music in many other genres including chamber music, vocal works, opera and film scores... (wikipedia)

So long as the human spirit thrives on this planet, music in some living form will accompany and sustain it and give it expressive meaning.
The whole problem can be stated quite simply by asking, 'Is there a meaning to music?' My answer would be, 'Yes.' And 'Can you state in so many words what the meaning is?' My answer to that would be, 'No.'
You compose because you want to somehow summarize in some permanent form your most basic feelings about being alive, to set down... some sort of permanent statement about the way it feels to live now, today.
To stop the flow of music would be like the stopping of time itself, incredible and inconceivable.
A melody is not merely something you can hum.