Performed by Wolfgang Kogert on the organ of the Hofburgkapelle in Vienna, Austria. Released on the album ORGANO/LOGICS (col legno 2023) https://essl.at/records/organologics.html
A comment on Karl Hodina’s Viennese song “Hergott aus Sta”, written on the occasion of the inauguration of the giant organ at St. Stephen’s Cathedral in Vienna. A piece of music whose shimmering harmonics are imbued with the chromatics of the original song, unfolding in a gradual process, like electronic music.
Score and more: http://essl.at/works/herrgott.html

ORGANO/LOGICS

HerrGott!

HerrGott! (2019) for organ

Performed by Wolfgang Kogert on the organ of the Hofburgkapelle in Vienna, Austria. Released on the album ORGANO/LOGICS (col legno 2023) https://essl.at/records/organologics.html
A retrogressively composed piece for organ, commissioned by Pier Damiano Peretti, which refers to the palindrome "sator arepo" quoted by Anton Webern. The highly chromatic ricercar in six different temporal layers at the centre is flanked by contrapuntal canons and ethereal reed clusters.
Score and more: https://essl.at/works/tenet-opera-rotas.html

tenet opera rotas

tenet opera rotas (2020) for organ

Performed by Wolfgang Kogert on the organ of the Hofburgkapelle in Vienna, Austria. Released on the album ORGANO/LOGICS (col legno 2023) https://essl.at/records/organologics.html
Music on the occasion of the 60th anniversary of Anton Webern’s death in Mittersill, 15 September 2005. The transformation of his final twelve-tone series (allegedly noted down on a circular tabletop) into a computer-generated glockenspiel, transcribed for toy piano respectively organ. Score and more: https://essl.at/works/webernspielwerk.html

WebernSpielWerk

WebernSpielWerk (2005/2020) version for organ

Performed by Wolfgang Kogert on the organ of the Hofburgkapelle in Vienna, Austria. Released on the album ORGANO/LOGICS (col legno 2023) https://essl.at/records/organologics.html
The transformation of a piece for electric guitar and mezzosoprano that throws together quotes from Purcell’s operas “Oedipus” and “King Arthur” into a trio sonata of baroque appearance featuring a throbbing bass. An image of sound spanning a period of 300 years, telling a story of grief and comfort.
Score and more: https://essl.at/works/purcell-puzzle.html

Puzzle of Purcell

Puzzle Of Purcell (2017/2020) version for organ

Performed by Wolfgang Kogert on the organ of the Hofburgkapelle in Vienna, Austria. Released on the album ORGANO/LOGICS (col legno 2023) https://essl.at/records/organologics.html
Palindromic-canonic variations on what is probably the most famous Christmas carol "Silent Night" (Stille Nacht). The score was punched into a tape that could be played in different directions on a mechanical musical clock. It was first adapted for toy piano, then, in collaboration with Wolfgang Kogert, for organ.
Score and more: https://essl.at/works/listen-thing.html

Listen Thing

Listen Thing (2008/2021) version for organ

Born 1960 in Vienna. Austrian composer, improviser and performer. He studied composition with Friedrich Cerha and musicology in Vienna. Besides writing experimental instrumental music, he performs on his own electronic instrument m@ze°2, develops software environments for computer-aided composition and creates generative sound and video environments. Since 2007 professor of composition for electro-acoustic and experimental music at the University of Music in Vienna.

Karlheinz Essl performs on a laptop computer that he has transformed into a live electronic musical instrument. The result is exciting and musical. You just won't hear these sounds anywhere else. He performs solo and in duets and trios, responding with sensitivity to fellow musicians, producing fascinating sound transformations, creating spontaneous surprises, and moving quickly from loops to cacophony to tiny clips of vocal sounds to all kinds of textures and ideas. He does all this with his m@ze°2(Modular Algorithmic Zound Environment) performance software. (Joel Chadabe, CDeMusic, Januar 2002)


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