Czech lands (Czech: České země) is an auxiliary term that is used mainly to describe the combination of Bohemia, Moravia and Czech Silesia. Today, those three historic provinces compose the Czech Republic. The Czech lands had been settled by the Celts (Boii), then later by various Germanic tribes (Marcomanni, Quadi, Lombards and others) until the beginning of 7th century and then by Slavic people. German colonists settled the area on the basis of Bohemian kings' invitation during the second part of 13th century (in Prague they lived already from the early 12th century) and lived alongside the Slavs.

The term Czech lands has been used to describe different things by different people. Some sources use the term to mean any territory under the Kingdom of Bohemia, the Lands of the Bohemian Crown. This would include territories like Lusatia (now in Germany) and the balance of Silesia, all of which were ruled from Prague at one time (1292/1327–1635/1742).

Coat of Arms of the historical Czech lands (in a narrow sense)

The term outsider art was coined by art critic Roger Cardinal in 1972 as an English synonym for art brut (French: [aʁ bʁyt], "raw art" or "rough art"), a label created by French artist Jean Dubuffet to describe art created outside the boundaries of official culture; Dubuffet focused particularly on art by insane-asylum inmates.

While Dubuffet's term is quite specific, the English term "outsider art" is often applied more broadly, to include certain self-taught or Naïve art makers who were never institutionalized. Typically, those labeled as outsider artists have little or no contact with the mainstream art world or art institutions. In many cases, their work is discovered only after their deaths. Often, outsider art illustrates extreme mental states, unconventional ideas, or elaborate fantasy worlds.

Outsider art has emerged as a successful art marketing category (an annual Outsider Art Fair has taken place in New York since 1993). The term is sometimes misapplied as a catch-all marketing label for art created by people outside the mainstream "art world," regardless of their circumstances or the content of their work.

Gustav Mahler (German pronunciation: [ˈɡʊstaf ˈmaːlɐ]; 7 July 1860 – 18 May 1911) was a late-Romantic Austrian composer and one of the leading conductors of his generation. He was born in the village of Kalischt, Bohemia, in what was then the Austrian Empire, now Kaliště in the Czech Republic. Then his family moved to nearby Iglau (now Jihlava) where Mahler grew up.

As a composer, he acted as a bridge between the 19th century Austro-German tradition and the modernism of the early 20th century. While in his lifetime his status as a conductor was established beyond question, his own music gained wide popularity only after periods of relative neglect which included a ban on its performance in much of Europe during the Nazi era. After 1945 the music was discovered and championed by a new generation of listeners; Mahler then became one of the most frequently performed and recorded of all composers, a position he has sustained into the 21st century.

Born in humble circumstances, Mahler displayed his musical gifts at an early age. After graduating from the Vienna Conservatory in 1878, he held a succession of conducting posts of rising importance in the opera houses of Europe, culminating in his appointment in 1897 as director of the Vienna Court Opera (Hofoper). During his ten years in Vienna, Mahler—who had converted to Catholicism from Judaism to secure the post—experienced regular opposition and hostility from the anti-Semitic press. Nevertheless, his innovative productions and insistence on the highest performance standards ensured his reputation as one of the greatest of opera conductors, particularly as an interpreter of the stage works of Wagner and Mozart. Late in his life he was briefly director of New York's Metropolitan Opera and the New York Philharmonic.