Concerto for Harmonica and Access Grid
a is filtered from b; they should be played in the order a-b
The path was Brooklyn -- Argonne -- West Virginia -- Argonne - West
    Virginia
The programmatic subject is the calling and mourning of the dead,
    for the dying
http://www.asondheim.org/concertoa.mp3
http://www.asondheim.org/concertob.mp3