JMSL Tutorial: Hierarchies

Sometimes the children of a JMSL hierarchy play in parallel (ie, all at once). One verse of our song provides an illustration.

            verse1

    __________|_____________

    |       |      |       |

violin1  violin2  viola  cello

The example above shows a parent called verse1 with four children: violin1, violin2, viola, and cello. In JMSL, verse1 would be a ParallelCollection, since it launches its children all at once. Its children would be MusicShapes, which contain the musical data to be played (such as a list of Midi notes). MusicShape and ParallelCollection both implement the Composable interface, so even though they behave differently, they can be scheduled in the same hierarchy.

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  (C) 1997 Phil Burk and Nick Didkovsky, All Rights Reserved

  JMSL is based upon HMSL (C) Phil Burk, Larry Polansky and David Rosenboom.