This started as an instrumental arrangement of the piano version but for reasons of the ranges of the voices, it had to be transposed (down a minor third). There were also some small changes made to the original vocal lines.
Transposed tone row for S, A, B version
Abelian diagram showing the singers for the nine movements
Marc-Olivier Oetterli (Bass), Ulrike Andersen (Alt), Muriel Schwarz (Sopran), im ehemaligen Konservatorium 2. Dez. 2022