Adolf Wölfli (1980-1981)
Short opera after Adolf Wölfli
for baritone, oboe, Enlish horn, bass clarinet, bassoon, prepared piano, 2 violines, viola, violoncello, double bass and tape
Duration: 25' 00"

Sextett (1982)
for 3 violins and 3 violoncelli
Duration: 3' 00"

Quasi una Tânpûrâ (1990-1991)
for chamber orchestra (1.0.1.0/1.0.1.1/2perc/preppf/3.2.2.1)
Duration: 28' 00"

"... sodaß ich's hernach mit einem Blick gleichsam wie ein schönes Bild ... im Geist übersehe" (1990-1991)
for string orchestra (10.6.64.2)
Duration: 16' 00"

"... Schatten ... durch unausdenkliche Wälder" (1992)
for 2 pianos and 2 percussion instruments
Schichtung, Schwingung, Abbruch.
In memoriam Richard H. Stern.
"...while I bring the invisible protagonist before the curtain..." (for Gösta Neuwirth).
Duration: 24' 00"

Descendiendo (1993)
for large orchestra (4.3.4.3.2sx/6.4.4.1/8perc/pf.2hp.2acn/str)
Duration: 30' 00"

"...." (1994)
Double concert
for accordion, viola and chamber ensemble (2cl/2tbn/perc/hpd/2vn.va.2vc.db)
Duration: 14' 00"

"... über den Atem, die Stille und die Zerbrechlichkeit..." (1994)
Attempt
for 7 brass instruments (2hn, 2tpt, 2tbn, btba)
Duration: 23' 00"

Sextett (1992-1996)
for flute, clarinet, percussion, piano, violin and violoncello
Duration: 15' 00"

"... Einklang freier Wesen ..." (1994-1996)
for 10 instruments (bfl, bcl, tpt, tbn, btba, 2perc, va, vc, db)
In addition to being a piece for ensemble, "... Einklang freier Wesen ..." can also be performed by smaller formations. All works in the reduced versions carry the title "... aus freier Lust ... verbunden ...".
Duration: 11' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for percussion I
Duration: 1' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for trombone
Duration: 11' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for violoncello
Duration: 11' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for 7 instruments (bfl, bcl, 2perc, va, vc, db)
Duration: 11' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for double bass
Duration: 11' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for viola
Duration: 11' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for viola, violoncello and double bass
Duration: 11' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for bass tuba
Duration: 11' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for trumpet in C
Duration: 11' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for 2 percussionists
Duration: 11' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for bass clarinet
Duration: 11' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for percussion II
Duration: 11' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for bass flute, bass clarinet and 2 percussionists
Duration: 11' 00"

"... aus freier Lust ... verbunden ..." (1994-1996)
for bass flute
Duration: 11' 00"

Nacht (1995-1996/98)
Chamber pera in 24 scenes
After Friedrich Hölderlin (Hyperion, Empedokles, Oedipus, Letters).
Roles: Soprano, mezzo soprano, tenor, baritone, bass, speaker
Instrumentation: 1.0.2.1/0.0.3.2/4perc/acn/1.1.1.4.3
Duration: 75' 00"

Fremde Welten (1997)
Concert
for piano and 20 strings (8.5.4.3)
Duration: 27' 00"

1. Streichquartett (1st string quartet) (1997)
Duration: 30' 00"

2. Streichquartett (2nd string quartet) (1998)
Duration: 18' 00"

Monodie (1998-1999)
for 18 instruments (1.1.2.1/1.1.1.0/2perc/hp/1.1.2.2.1)
Duration: 15' 00"

Wer, wenn ich schriee, hörte mich... (1999)
for percussion and ensemble (1.1.2.1.ssx/1.2.2.1/perc/acn/3.2.2.1)
Duration: 25' 00"

Nach-Ruf ... ent-gleitend ... (1999)
for flute, oboe, clarinet, violin, viola and violoncello
Duration: 16' 00"

Torso (1999-2000/01)
for large orchestra (4.3.4.4.2sx/5.4.3.1/timp.2perc/2hp.acn/12.10.8.8.6)
After the unfinished piano sonata in C major D840 by Franz Schubert.
Duration: 40' 00"

in vain (2000)
for 24 instruments (2.1.2.1.sx/2.0.2.0/2perc/pf.hp.acn/3.2.2.1)
In conjunction with a visual implementation (light management).
Duration: 70' 00"

Blumenstück (2000)
for choir (8.8.8.8), bass tuba and string quintet
Text source: "Siebenkäs" by Jean Paul.
Duration: 18' 00"

lied (2000)
for tenor and 2 percussionists
Texts: Süsskind von Trimberg
Duration: 5' 00"

olo für Viola d'amore (solo for viola d'amore) (2000)
Duration: 15' 00"

tria ex uno (2001)
Sextet
for flute, clarinet, percussion, piano, violin and violoncello
Duration: 12' 00"

de terrae fine (2001)
for violin solo
Duration: 17' 00"

flow and friction (2001)
Small study
for four-handed sixteenth tone piano
Duration: 9' 00"

"In iij Noct." (2001)
3rd string quartet
This piece is performed in total darkness, the musicians play from memory. The score contains notes and elaborate instructions.
Duration: variabel

"für Hans Landesmann" (2001-2002)
for 12 instruments (0.0.2.0.sx/1.1.1.0/perc/hp.acn/vn.va.vc)
Duration: 7' 00"

ein Saitenspiel (2002)
for re-tuned discant zither
Duration: 4' 00"

Die schöne Wunde (2002-2003)
Opera in two acts
After Franz Kafka's "Ein Landarzt" and Edgar Allan Poe's "The Pit and the Pendulum".
Roles:
Prisoner - baritone
Country doctor and the 7th white candle - bass
Julia, Baucis, the sister, Rosa Luxemburg II, the 1st white candle - soprano
Rosa, the mother, Rosa Luxemburg III, the 2nd white candle - mezzo-soprano
Romeo, Philemon, the ill boy, the 4th white candle - counter tenor
Horsehand, the old one, the 5th white candle - tenor
Enthusiast, the 6th white candle - actors
Choir: 5.5.5.4 "choir of the family/neighbourhood of the ill boy", "the judge's choir", "the rat's choir"
Score: 2.1.2.1.sx/2.2.2.1/3perc/hp.pf.acn.cel/4.2.2.1
8 musical statistics: 5vc, 3db
Duration: 2h 30' 00"

Natures mortes (2003)
for large orchestra (3.3.4.3.2sx/4.3.4.1/4perc/hp.pf.acn/10.8.8.8.6)
Duration: 26' 00"

4. Streichquartett (4th string quartet) (2003)
for string quartet and live electronics
Duration: variabel

Konzert (concert) (2003-2004)
for violoncello and orchestra (4.4.4.4/6.4.4.1/timp.3perc/12.12.10.8.6)
Duration: 30' 00"

RITUAL (2004)
Open-air music
for 12 large drums and 3 brass bands with church bells ad lib
Duration: 70' 00"

Rondeau (2004)
for ensemble (also suitable for amateur or student ensemble)
Duration: 14' 00"

Finale (2004)
for flute
Duration: 10' 00"

Haiku (2004)
for baritone and ten instruments (ob, bn, 2perc, hp, pf, acn, vn, vc, db)
Duration: 15' 00"

Poème (2005)
for large orchestra (4.4.4.4/6.4.4.1/2timp.4perc/18.16.11.11.9)
Duration: 7' 00"

7 Klangräume (2005)
To the incompete fragments of W. A. Mozart's Requiem
for choir and orchestra (0.0.0.2/0.2.3.0.bsthn/perc/org/6.5.4.3.3)
Duration: 28' 00"

3 Liebesgedichte (2005)
for 6 voices (SMezATBar)
Texts: August Stramm
Blüte - Heimlichkeit - Spiel.
Duration: 12' 00"

....... (2006)
for viola and 6 voices
Vocalists.
Duration: 15' 00"-16' 00"
Manuscript

Sayaka (2006)
for percussion and accordion
Duration: 9' 00"

Hertervig-Studien (2006)
for 6 voices
Duration: 20' 00"

Hyperion (2006)
Concert
for light and orchestra (3.3.3.3.tsx.bsx/4.3.3.2/4perc/2pf.pf(tuned normally)/14.12.10.8.6)

Melancholia (2006-2007)
Opera in three parts
for 24 chorists, 10 soloists and orchestra (1.1.1.1.sx/2.1.1.0/2perc/pf.acn/4.2.3.2)
After the first episode of Jon Fosse's novel "Melancholie".
Duration: 90' 00"

... in progress (2007)
for chamber ensemble (fl, cl, hn, tbn, perc, pf, str(10))

Quartett (2007)
for 4 guitars

ins Licht (2007)
Trio
for violin, violoncello and piano

Bruchstück (2007)
for large orchestra (4.4.4.4/8.4.4.2/4perc/16.14.12.10.8)
Duration: 30' 00"

REMIX (2007)
for chamber ensemble (1.1.1.1/1.1.1.0/2perc/pf/string quintet)
Duration: 25' 00"

Konzert (concert) (2007)
for piano and orchestra (3.3.3.3/4.3.3.1/3perc/14.12.10.8.6)
Duration: 25' 00"

5. Streichquartett (5th string quartet) (2007)
Duration: 22' 00"

Open Spaces (2007)
for 12 string instruments (6.2.2.2) and 2 percussion
Duration: 16' 00"

Open Spaces II (2007)
for 12 string instruments (6.2.2.2) and 2 percussion
Version for four-part spatial arrangement of the instruments.
Duration: 16' 00"

Konzert (concert) (2008)
for baritone saxophone andorchestra (3.3.3.3/4.3.4.1/3perc/str)
Duration: 25' 00"

Haas, Georg Friedrich: Grundlagen für eine neue Musiktheorie. Sechs Thesen, in: Dissonanz 117 (2012), S. 15-21 [Internet]

Neufeld, Marc: Was ist Musiktheorie? Erweiterter Bericht über eine Zürcher Podiumsdiskussion aus Anlass von Georg Friedrich Haas' "Grundlagen für eine neue Musiktheorie. Sechs Thesen" (dissonance 117, März 2012, S. 15-21), in: Dissonanz 121 (2013), S. 67-68 [Internet]

Pohlit, Stefan: Unterwegs zu einer Epistemologie des Tons, in: Dissonanz 121 (2013), S. 54-55

Meyer, Thomas: Am oberen Limit? Neue Musik am Lucerne Festival 2011, in: Dissonanz 116 (2011), S. 60-61 [Internet]

Kunkel, Michael: Quasi un attraversamento - Saxophonmehrklänge in Kunst und Forschung von Giorgio Netti, Marcus Weiss und Georg Friedrich Haas, in: Dissonanz (Juni 2010) 110 (2010), S. 20-35 [Internet]

Knipper, Till: "Ich leiste mir den Luxus...". Die Bedeutung von Tonsystemen in der Oper "Melancholia" von Georg Friedrich Haas, in: Dissonanz 108 (2009), S. 38-41

Topolski, Jan: Le fantôme du spectralisme circule en europe. Des inspirations et des filations spectrales chez Fausto Romitelli, Georg Friedrich Haas, Pawel Mykietyn et quelques autres, in: Dissonanz 107 (2009), S. 22-28 [Internet]