[2] In December 1982 Karlheinz Stockhausen was invited to the Royal Conservatory for a series of concerts, master classes, and lectures, at which time Pasveer worked with the composer and with Suzanne Stephens on his compositions Zeitmaße, Amour, and In Freundschaft.

[3][4] The next year, Stockhausen made a new version of the piece, for flute and six-channel electronic music, and Pasveer likewise gave its premiere at Ircam in Paris in May 1985.

In addition to her activities as a flautist, in 1989 she learned the solo dancer-mime part for Stockhausen's Inori, which she performed for the first time on 27 May 1989 in the Kölner Philharmonie, with the Gürzenich Orchestra conducted by the composer.

[4] She also performs from memory the 83-minute-long Vortrag über HU (a sung and mimed lecture introducing Inori), in both German and English, and has made video recordings of both versions.

Pasveer also has recorded as a soprano singer in a number of Stockhausen's works, including the electronic music for both Dienstag aus Licht (Oktophonie) and Freitag aus Licht, as well as Die sieben Lieder der Tage (extracted from "Montag"), Zwei Paare (made as soundtrack music for the 2000 short film In Absentia by the Quay Brothers), and Urantia (the Nineteenth Hour from Klang).