Question: Adolf Čech led performances of operas by a composer who was active during what period?
Context: The Devil and Kate, Op.  112, B.201, ("Čert a Káča" in Czech) is an opera in three acts by Antonín Dvořák to a Czech libretto by Adolf Wenig.  It is based on a farce by Josef Kajetán Tyl, and the story also had been treated in the "Fairy Tales" of Božena Němcová.  The first performance of the opera was at the National Theatre, Prague, on 23 November 1899, under Adolf Čech. The Two Widows () is a two-act Czech opera by Bedřich Smetana based on the libretto of Emanuel Züngel.  The libretto is based on Jean Pierre Felicien Mallefille's one-act play "Les deux veuves".  The opera was composed between June 1873 and January 1874, and its premiere took place on 27 March 1874 at the Prague Czech Theatre under the direction of Smetana.  However, this premiere was not successful and the opera was rewritten in 1874.  The spoken dialogue was replaced by through-composed recitatives and some of the music and characters were reworked.  The second premiere on 20 October 1874 was very successful.  A further revised version was premiered on 17 March 1878, under Adolf Čech. Pyotr Ilyich Tchaikovsky ( ; Russian: Пётр Ильи́ч Чайко́вский ; 25 April/7 May 1840 – 25 October/6 November 1893), often anglicized as Peter Ilich Tchaikovsky, was a Russian composer of the romantic period, some of whose works are among the most popular music in the classical repertoire.  He was the first Russian composer whose music made a lasting impression internationally, bolstered by his appearances as a guest conductor in Europe and the United States.  Tchaikovsky was honored in 1884, by Emperor Alexander III, and awarded a lifetime pension. The Czech Suite in D major (Czech: "Česká suita D dur" ), Op. 39 was composed by Antonín Dvořák in 1879 and published later in his life.  Adolf Čech conducted the premiere. Josef Suk wrote the music for Julius Zeyer's mythological drama "Radúz and Mahulena" in 1897-8.  It was first performed on 6 June 1898, under the baton of Adolf Čech. Giuseppe Farinelli (7 May 1769 – 12 December 1836) was an Italian composer active at the end of the 18th century and the beginning of the 19th century who excelled in writing opera buffas. Considered the successor and most successful imitator of Domenico Cimarosa, the greatest of his roughly 60 operas include "I riti d'Efeso" (1803, Venice), "La contadina bizzarra" (1810, Milan) and "Ginevra degli Almieri" (1812, Venice).  More than 2/3 of his operas were produced between 1800-1810 at the height of his popularity.  With the arrival of Gioachino Rossini his operas became less desirable with the public, and by 1817 his operas were no longer performed.  His other compositions include 3 piano forte sonatas, 3 oratorios, 11 cantatas, 5 masses, 2 Te Deums, a Stabat mater, a Salve regina, a Tantum ergo, numerous motets, and several other sacred works. Adolf Čech (11 December 184127 December 1903) was a Czech conductor, who premiered a number of significant works by Antonín Dvořák (the 2nd, 5th and 6th symphonies, more than any other conductor; other important orchestral works, four operas, the "Stabat Mater"), Bedřich Smetana ("Má vlast", five operas), Zdeněk Fibich (two operas) and other Czech composers.  He also led the first performances outside Russia of two operas by Pyotr Ilyich Tchaikovsky and the Czech premieres of seven operettas by Jacques Offenbach.  He was also a bass singer and a translator of opera librettos. The Jacobin ("Jakobín" in Czech) is an opera in three acts by Antonín Dvořák to an original Czech libretto by Marie Červinková-Riegrová.  Červinková-Riegrová took some of the story's characters from the story by Alois Jirásek, "At the Ducal Court", but devised her own plot about them.  The first performance was at the National Theatre, Prague, 1889.  Červinková-Riegrová revised the libretto, with Dvořák's permission, in 1894, notably in the last act.  Dvořák himself revised the music in 1897 (the revised premiere was on 19 June 1898, under Adolf Čech). Sébastien d'Hérin is a French harpsichordist and conductor.  As a harpsichordist he studied under Gustav Leonhardt, Pierre Hantaï, Bob van Asperen, Kenneth Gilbert and Christophe Rousset.  He founded his own ensemble les Nouveaux Caractères in 2006 with which he has led performances of operas including works of Purcell, Sisyphe amoureux d'Égine from Les Fêtes de Thétis by Colin de Blamont (second act Titon et l'Aurore by Bernard de Bury), and Philémon et Baucis by Haydn. Má vlast (] , meaning "My homeland" in the Czech language) is a set of six symphonic poems composed between 1874 and 1879 by the Czech composer Bedřich Smetana.  While it is often presented as a single work in six movements and – with the exception of "Vltava" – is almost always recorded that way, the six pieces were conceived as individual works.  They had their own separate premieres between 1875 and 1880; the premiere of the complete set took place on 5 November 1882 in Žofín Palace, Prague, under Adolf Čech, who had also conducted two of the individual premieres.
Answer: romantic