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
Artis Historicae Penus Artis Historicae Penus Artis Historicae Penus ("Treasury of the Art of History", 1579) is a compilation of 18 ars historica works brought out in 1579 by the late Renaissance Basel printer Pietro Perna. This compendium in octavo appeared in 2 volumes with a copious index. A third volume adds the final work by , often missing in library collections as a separate edition. Three years earlier, in 1576, Perna brought out a single volume in the same format that ran to 1140 pages and featured the central work of Jean Bodin in its title, along with twelve other authors. Perna