Ján Koehler was a Polish opera

Opera

Opera is an art form in which singers and musicians perform a dramatic work combining text and musical score, usually in a theatrical setting. Opera incorporates many of the elements of spoken theatre, such as acting, scenery, and costumes and sometimes includes dance...

tic baritone

Baritone

Baritone is a type of male singing voice that lies between the bass and tenor voices. It is the most common male voice. Originally from the Greek , meaning deep sounding, music for this voice is typically written in the range from the second F below middle C to the F above middle C Baritone (or...

. Born in Lviv

Lviv

Lviv is a city in western Ukraine. The city is regarded as one of the main cultural centres of today's Ukraine and historically has also been a major Polish and Jewish cultural center, as Poles and Jews were the two main ethnicities of the city until the outbreak of World War II and the following...

, he studied singing in his native city and in Vienna. He made his professional debut in Lviv in 1845 as Raimunds in Conradin Kreutzer

Conradin Kreutzer

Conradin Kreutzer or Kreuzer was a German composer and conductor. His works include the opera for which he is remembered, Das Nachtlager in Granada, and Der Verschwender, both produced in 1834.Kreutzer owes his fame almost exclusively to Das Nachtlager in Granada , which kept the stage for...

's Der Verschwender. From 1857–1872 he was a leading artist at the Teatr Wielki, Warsaw where he notably created the role of Maciej in the world premiere of Stanisław Moniuszko

Stanisław Moniuszko

Stanisław Moniuszko was a Polish composer, conductor and teacher. His output includes many songs and operas, and his musical style is filled with patriotic folk themes of the peoples of the former Polish-Lithuanian Commonwealth...

's The Haunted Manor

The Haunted Manor

The Haunted Manor is an opera in four acts composed by Polish composer Stanisław Moniuszko in 1861–1864. The libretto was written by Jan Chęciński...

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He retired from the stage in 1885 and lived in retirement in Lviv until his death there 10 years later.