Vocal

• pulsar_2 for voice, flute, piano and computer (Ambisonics), 2009

• …aufflattern mit dunklen Gesichtern die Fledermäuse…, (“the bats flap up with dark faces”), autumn music for four women’s voices, 1995

• Weil der Wald an den Menschen stirbt (“because the forest is dying of human beings”) for mixed chorus and stones (after Günter Grass), 1991

8 compositions for a full-length program on texts by Konrad Bayer, for Schlumpf’s own sextet “Die Vögel”, 1986 (with singer):
“herr je und we du liebe zeit”
“plötzlich ging die sonne aus”
“die vögel”
“flötengong – alte wunde”
“der kutscher sitzt auf dem tanzmeister”
“er der tag”
“mit einem schwert aus reinem crystall”
“riegel mir den hals”

6 compositions for Schlumpf’s own 11-piece band, Swiss Fusion 84 (with singer):
Passagen
Freischütz
Ouverture
Interruptus
From Eriboll to Kirkiboll (nach Ernst W. Heine)
Rattaplasma – der serbische Olymp – Kokoskotten (nach Dada-Texten)

• “…dass es wächst und schwillt”, (“that it grows and swells”), short cantata for baritone, piano and string orchestra (after Hermann Hiltbrunner), 1981

• Tenebrae for soprano, alto, baritone, mixed chorus, 5 brass instruments, harpsichord and string quintet (after Paul Celan), 1976-7

• Todesfuge (“Death Fugue”) for 16-voice speaking chorus (after Paul Celan), 1976

• 3 Lieder for soprano and chamber ensemble (on poems by Paul Celan), 1971