Program music 1970s in particular experimented with program music, among which was Rush's "Jacob's Ladder" (1980), which shows clear influences of Smetana's "Má vlast" ("My Homeland") (1874-1879). In addition, Rush's songs "Xanadu", "Red Barchetta", and "YYZ" also show their experimentalism with program music, as do parts of "2112", particularly the discovery scene. Composers and some theorists argue that there is indeed no such thing as true "absolute ("ars gratia artis") music" and that music always at least conveys or evokes emotions. While non-professional listeners often claim that music has meaning (to them), "new" musicologists, such as Susan McClary (1999), argue that so-called
Ars grammatica Ars grammatica An ars grammatica () is a generic or proper title for surveys of Latin grammar. Extant works known as "Ars grammatica" have been written by The most famous "ars grammatica" since late antiquity has been that composed by Donatus. Two "ars grammatica" circulate under the name Donatus. The first, the "Ars Minor", is a brief overview of the eight parts of speech: noun, pronoun, verb, adverb, participle, conjunction, preposition, and interjection ("nomen, pronomen, verbum, adverbium, participium, conjunctio, praepositio, interjectio"). The text is presented entirely in a question-and-answer format (e.g. "How many numbers does a noun have?" "Two: singular