Aleatoric Music - "Open Form" Chance Music

"Open Form" Chance Music

Open form is a term sometimes used for mobile or polyvalent musical forms, where the order of movements or sections is indeterminate or left up to the performer. Roman Haubenstock-Ramati composed a series of influential "mobiles" such as Interpolation (1958).

However, "open form" in music is also used in the sense defined by the art historian Heinrich Wölfflin (Kunstgeschichtliche Grundbegriffe, 1915) to mean a work which is fundamentally incomplete, represents an unfinished activity, or points outside of itself. In this sense, a "mobile form" can be either "open" or "closed". An example of a closed mobile musical composition is Stockhausen's Zyklus (1959). Terry Riley's In C (1964) was composed of 53 short sequences; each member of the ensemble can repeat a given sequence as many times as desired before going on to the next, making the details of each performance of In C unique. However, because the overall course is fixed, it is a closed form.

Read more about this topic:  Aleatoric Music

Famous quotes containing the words open, form, chance and/or music:

    With liberty and pleasant weather, the simplest occupation, any unquestioned country mode of life which detains us in the open air, is alluring. The man who picks peas steadily for a living is more than respectable, he is even envied by his shop-worn neighbors. We are as happy as the birds when our Good Genius permits us to pursue any outdoor work, without a sense of dissipation.
    Henry David Thoreau (1817–1862)

    While they stand at home at the door he is dead already,
    The only son is dead.

    But the mother needs to be better,
    She with thin form presently drest in black,
    By day her meals untouch’d, then at night fitfully sleeping, often waking,
    In the midnight waking, weeping, longing with one deep longing,
    O that she might withdraw unnoticed, silent from life escape and
    withdraw,
    To follow, to seek, to be with her dear dead son.
    Walt Whitman (1819–1892)

    The popularity of disaster movies ... expresses a collective perception of a world threatened by irresistible and unforeseen forces which nevertheless are thwarted at the last moment. Their thinly veiled symbolic meaning might be translated thus: We are innocent of wrongdoing. We are attacked by unforeseeable forces come to harm us. We are, thus, innocent even of negligence. Though those forces are insuperable, chance will come to our aid and we shall emerge victorious.
    David Mamet (b. 1947)

    Sweet spring, full of sweet days and roses,
    A box where sweets compacted lie;
    My music shows ye have your closes,
    And all must die.
    George Herbert (1593–1633)