Horst-Tanu Margraf was a German conductor, Generalmusikdirektor of Halle (Saale) from 1950 to 1969.

Margraf was Music director

Music director

A music director may be the director of an orchestra, the director of music for a film, the director of music at a radio station, the head of the music department in a school, the co-ordinator of the musical ensembles in a university or college , the head bandmaster of a military band, the head...

 in Lemberg during World War II. In Halle he was one of the founders of the Handel Festival

Handel Festival, Halle

The Handel Festival in Halle is an international music festival, concentrating on the music of George Frideric Handel, in the composer's birthplace in Sachsen-Anhalt, Germany. The festival was founded in 1922 and grew into a center of Handel studies and performance in Europe...

. He conducted the Staatskapelle Halle

Staatskapelle Halle

The Staatskapelle Halle is a symphony orchestra based in Halle, Saxony-Anhalt, Germany....

 in several operas of George Frideric Handel

George Frideric Handel

George Frideric Handel was a German-British Baroque composer, famous for his operas, oratorios, anthems and organ concertos. Handel was born in 1685, in a family indifferent to music...

, some in their first modern production, such as Rinaldo

Rinaldo (opera)

Rinaldo is an opera by George Frideric Handel composed in 1711. It is the first Italian language opera written specifically for the London stage. The libretto was prepared by Giacomo Rossi from a scenario provided by Aaron Hill. The work was first performed at the Queen's Theatre in London's...

in 1954. He conducted for the festival Radamisto (1955), Poro

Poro (opera)

Poro, re dell'Indie is an opera seria in three acts written for the Royal Academy of Music by George Frideric Handel...

(1956), Admetos (1958), Giulio Cesare

Giulio Cesare

Giulio Cesare in Egitto , commonly known simply as Giulio Cesare, is an Italian opera in three acts written for the Royal Academy of Music by George Frideric Handel in 1724...

(1959) and Imeneo

Imeneo

Imeneo is an opera seria in three acts by George Frideric Handel. The Italian-language libretto was adapted from Silvio Stampiglia's Imeneo. Handel had begun composition in September 1738, but did not complete the score until 1740...

(1960).

In 1966 he conducted a recording of a shortened version of Imeneo with Günther Leib in the title role, Hans-Joachim Rotzsch

Hans-Joachim Rotzsch

Hans-Joachim Rotzsch is a German choral conductor, conducting the Thomanerchor from 1972 until 1991 as the fifteenth Thomaskantor since Johann Sebastian Bach. He is also a tenor and an academic.- Biography :...

 as Tirinto, and Sylvia Geszty as Rosmene.