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Hierarchical Music Specification Language

In today's world, Hierarchical Music Specification Language has become a topic of great importance and relevance for different sectors of society. With the passage of time, Hierarchical Music Specification Language has acquired increasing importance, generating a significant impact on various aspects of daily life. Its implications range from the personal to the professional and social spheres. Interest in Hierarchical Music Specification Language has been increasing, awakening the interest and curiosity of a diverse and varied audience. Given this growing attention, it is necessary to delve deeper into the topic of Hierarchical Music Specification Language and explore the various perspectives and dimensions that surround it.

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The Hierarchical Music Specification Language (HMSL) is a music programming language written in the 1980s by Larry Polansky, Phil Burk, and David Rosenboom at Mills College.[1] Written on top of Forth, it allowed for the creation of real-time interactive music performance systems, algorithmic composition software, and any other kind of program that requires a high degree of musical informatics. It was distributed by Frog Peak Music, and runs with a very light memory footprint (~1 megabyte) on Macintosh and Amiga systems.

Unlike CSound and other languages for audio synthesis, HMSL is primarily a language for making music. As such, it interfaces with sound-making devices through built-in MIDI classes. However, it has a high degree of built-in understanding of music performance practice, tuning systems, and score reading. Its main interface for the manipulation of musical parameters is through the metaphor of shapes, which can be created, altered, and combined to create a musical texture, either by themselves or in response to real-time or scheduled events in a score.

HMSL has been widely used by composers working in algorithmic composition for over twenty years. In addition to the authors (who are also composers), HMSL has been used in pieces by Nick Didkovsky, The Hub, James Tenney, Tom Erbe, and Pauline Oliveros.

A Java port of HMSL was developed by Nick Didkovsky under the name JMSL, and is designed to interface to the JSyn API.

HMSL is licensed under the free Apache License V2.

References

  1. ^ Polansky, Larry; Burk, Phil; Rosenboom, David (1990). "HMSL (Hierarchical Music Specification Language): A Theoretical Overview". Perspectives of New Music. 28 (2): 136–178. doi:10.2307/833016.
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