Question: A waltz, is dance music in triple meter, often written in time, probably deriving from which German word, and is a folk dance in time which was popular in Austria, south Germany, German Switzerland, and Slovenia at the end of the 18th century?

full_context: Document 1: Polka: The polka is originally a Czech dance and genre of dance music familiar throughout Europe and the Americas. It originated in the middle of the 19th century in Bohemia, now part of the Czech Republic. Polka remains a popular folk music genre in many European countries, and is performed by folk artists in the Czech Republic, Germany, Austria, Poland, Croatia, Slovenia, Switzerland, and to a lesser extent in Latvia, Lithuania, the Netherlands, Hungary, Italy, Ukraine, Romania, Belarus, Russia, and Slovakia. Local varieties of this dance are also found in the Nordic countries, the United Kingdom, Ireland, Latin America and the United States.
Document 2: Volkstümliche Musik: Volkstümliche Musik (German for "folksy/traditional/popular music") is a modern popular derivation of the traditional "Volksmusik" genre of German-speaking countries in general and their Alpine regions in particular. Though it is often marketed as "Volksmusik", it differs from traditional folk music in that it is commercially performed by celebrity singers and concentrates on newly created sentimental and cheerful feel-good compositions. Volkstümliche Musik is sometimes instrumental, but usually presented by one or especially two singers and is most popular amongst an adult audience in Germany, Austria, Switzerland, and also in South Tyrol (Italy), Alsace (France), Netherlands, Flanders (Belgium), Slovenia and Silesia (Poland).
Document 3: Croatian tamburica: Croatian tamburitza (tam•bu•rit•za) is a folk song played with a tambura (cousins with Russian balalaika and the Italian mandolin) and is accompanied with a dance. The origin is most commonly thought to be introduced from the Turks by way of Bosnia between the 14th and 16th century. Although, others believe that the tambura was introduced by the Persians. It was not until the 19th century that tamburitza gained popularity during several nationalist movements against the Austro-Hungarian Empire. Many societies such as Croatian, Slovak and Czech, used national folk songs and dance as an "expression of their national identity". During this time, the first Croatian tamburitza ensemble was created by Pajo Kolarić in 1847. Also, during early 20th century ethnomusicologist Professor Vinko Žganec, began to write down Croatian folk songs which in the past were not written, but passed down from generation to generation.
Document 4: Austrians: Austrians (German: "Österreicher" ) are a Germanic nation, native to Austria that share a common Austrian culture, Austrian descent and Austrian history. The English term "Austrians" was applied to the population of Habsburg Austria from the 17th or 18th century. Subsequently, during the 19th century, it referred to the citizens of the Empire of Austria (1804–1867), and from 1867 until 1918 to the citizens of Cisleithania. In the closest sense, the term "Austria" originally referred to the historical March of Austria, corresponding roughly to the Vienna Basin in what is today Lower Austria.
Document 5: Septuple meter: Septuple meter (British: metre) or (chiefly British) septuple time is a meter with each bar (American: measure) divided into 7 notes of equal duration, usually or (or in compound meter, time). The stress pattern can be 2+2+3, 3+2+2, or occasionally 2+3+2, although a survey of certain forms of mostly American popular music suggests that 2+2+3 is the most common among these three in these styles. A time signature of , however, does not necessarily mean that the bar is a compound septuple meter with seven beats, each divided into three. This signature may, for example, be used to indicate a bar of triple meter in which each beat is subdivided into seven parts. In this case, the meter is sometimes characterized as "triple septuple time". It is also possible for a time signature to be used for an irregular, or "additive" metrical pattern, such as groupings of 3 + 3 + 3 + 2 + 3 + 2 + 3 + 2 eighth notes. Septuple meter can also be notated by using regularly "alternating" bars of triple and duple or quadruple meters, for example + , or + + , or through the use of "compound meters", in which two or three numerals take the place of the expected numerator 7, for example, , or .
Document 6: Mazurka: The mazurka (in Polish mazurek, plural "mazurki") is a Polish folk dance in triple meter, usually at a lively tempo, and with "strong accents unsystematically placed on the second or third beat".
Document 7: Mazurka (disambiguation): Mazurka is a Polish folk dance in triple meter.
Document 8: Waltz (music): A waltz (German: "Walzer"; French: "Valse", Italian: "Valzer", Spanish: "Vals", Polish: "Walc"), probably deriving from German "Ländler", is dance music in triple meter, often written in  time. A waltz typically sounds one chord per measure, and the accompaniment style particularly associated with the waltz is (as seen in the example to the right) to play the root of the chord on the first beat, the upper notes on the second and third beats.
Document 9: Varsovienne: The varsovienne, also known as the varsouvienne or varsoviana, is a slow, graceful dance in time with an accented downbeat in alternate measures. It combines elements of the waltz, mazurka, and polka. The dance originated around 1850 in Warsaw, Poland. The words "varsovienne" and "varsoviana" are French and Spanish feminine adjectives, respectively, meaning 'from Warsaw'. The dance was popular in 19th-century America, where it was danced to the tune "Put Your Little Foot". It quickly became a favorite folk dance in the Scandinavian countries as well. The unique armhold by the same name – also known as the promenade hold – is used in other dance styles such as the American square dance, contra dance, and some ballroom dances.
Document 10: Saltarello: The saltarello is a musical dance form originally from Italy. The first mention of it is in Add MS 29987, a fourteenth-century manuscript probably of Tuscan origin, now in the British Library. It was played in a fast triple meter and is named for its peculiar leaping step, after the Italian verb "saltare" ("to jump"). This characteristic is also the basis of the German name "Hoppertanz" or "Hupfertanz" ("hopping dance"); other names include the French "pas de Brabant" and the Spanish "alta" or "alta danza".
Document 11: Dance music: Dance music is music composed specifically to facilitate or accompany dancing. It can be either a whole musical piece or part of a larger musical arrangement. In terms of performance, the major categories are live dance music and recorded dance music. While there exist attestations of the combination of dance and music in ancient times (for example Ancient Greek vases sometimes show dancers accompanied by musicians), the earliest Western dance music that we can still reproduce with a degree of certainty are the surviving medieval dances. In the Baroque period, the major dance styles were noble court dances (see Baroque dance). In the classical music era, the minuet was frequently used as a third movement, although in this context it would not accompany any dancing. The waltz also arose later in the classical era. Both remained part of the romantic music period, which also saw the rise of various other nationalistic dance forms like the barcarolle, mazurka, ecossaise, ballade and polonaise.
Document 12: Contra dance: Contra dance (also contradance, contra-dance and other variant spellings) is a folk dance made up of long lines of couples. It has mixed origins from English country dance, Scottish, French dance styles in the 17th century. Sometimes described as New England folk dance or Appalachian folk dance, contra dances can be found around the world and have much popularity in North America and the United Kingdom where weekly or monthly dances and annual dance weekends are common. According to the Contra Dance Links website, contra dancing can be found in all US states except for South Dakota.
Document 13: Walkdown: In country music, walkdown is a bassline which connects two root position chords whose roots are a third apart, often featuring an inverted chord to go between the root notes of the first two chords. See: slash chord. A walkup would be the converse. For example the chords G Major and E minor (a minor third apart) may be joined by an intervening chord to create stepwise motion in the bass: G-D/F♯ -Em (I-V6/4-vi). The second chord, D Major, is performed with its third note, the F#, in the bass. Walkdowns may be performed by the upright bass player, the electric bass player, the guitarist, or a piano player.
Document 14: Lied: The lied ( or , plural lieder ; ] , plural ] , German for "song") is a setting of a German poem to classical music. The term is used for songs from the late fourteenth or early fifteenth centuries or even to refer to Minnesang from as early as the 12th and 13th centuries. It later came especially to refer to settings of Romantic poetry during the late eighteenth and nineteenth centuries, and into the early twentieth century. Examples include settings by Ludwig van Beethoven, Franz Schubert, Robert Schumann, Johannes Brahms, Hugo Wolf or Richard Strauss. Among English speakers, however, "lied" is often used interchangeably with "art song" to encompass works that the tradition has inspired in other languages. The poems that have been made into lieder often center on pastoral themes or themes of romantic love.
Document 15: Ländler: The Ländler (] ) is a folk dance in  time which was popular in Austria, south Germany, German Switzerland, and Slovenia at the end of the 18th century.
ground_truth: Ländler