... interest.¹

In this text, the term `rule' (and `rule-based') primarily denotes the musical concept of a compositional rule. In particular, this term does not implicitly refer to any specific programming technique (e.g. the term does not implicitly refer to a Prolog rule [Bratko, 2001] or a condition-action rule [Russell and Norvig, 2002]). Instead, the text explains how the musical concept is realised as a programming concept in different systems.

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...Sandred:OMRC:2000,Sandred:PRISMA01:2003²

OMRC is defined on top of OMCS, which in turn is a port of the PWConstraints subsystem PMC from its host composition system PatchWork [Laurson, 1996] to the descendant OpenMusic [Assayag et al., 1999].

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... OMCS)³

Personal communication at PRISMA (Pedagogia e Ricerca sui Sistemi Musicali Assistiti) meeting, January 2004 at Centro Tempo Reale in Florence

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... Strasheela.⁴

Strasheela is also the name of an amicable and stubby scarecrow in the children's novel The Wizard of the Emerald City by Alexander Volkov [Wolkow, 1939] in which the Russian author retells The Wonderful Wizard of Oz by Baum [1900]. The latter inspired the name for the programming language Oz [van Roy and Haridi, 2004], which forms the foundation for the prototype of the Strasheela composition system.

The scarecrow's brain consists only in bran, pins and needles. Nevertheless, he is a brilliant logician and loves to multiply four figure numbers at night. Little is yet known about his interest in music, but Strasheela is reported to sometimes dance and sing with joy.

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