[LAA] Strasheela 0.9.4 has been released

Torsten Anders torsten.anders at plymouth.ac.uk
Thu Apr 10 17:08:13 EDT 2008

Dear all,

Strasheela is a highly expressive constraint-based music composition
system. Users declaratively state a music theory and the computer
generates music which complies with this theory. A theory is
formulated as a constraint satisfaction problem (CSP) by a set of
rules (constraints) applied to a music representation in which some
aspects are expressed by variables (unknowns). Music constraint
programming is style-independent and is well-suited for highly complex
theories (e.g. a fully-fledged theory of harmony). Results can be
output into various formats including MIDI, Lilypond, and Csound.

The output facilities to Lilypond are greatly revised in this  
release. Strasheela now outputs the format of the latest stable  
Lilypond release (2.10.0), supports various special cases (e.g.,  
single staff polyphony, chords, enharmonic notation, basic tuplets),  
and the customisation options have been extended. New examples  
demonstrate these features. In addition, this version facilitates  
composition in 22-tone equal temperament (22 ET): various 22 ET  
chords and scales are provided, and output to Lilypond, as well as  
Csound is supported. New examples have been added which create  
microtonal chord progressions. Other additions and bugfixes have been  
made to the system as well.

For more information on Strasheela, please visit

Changes are described at

This release can be downloaded from:

Torsten Anders
Interdisciplinary Centre for Computer Music Research
University of Plymouth
Office: +44-1752-233667
Private: +44-1752-558917

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