"Men are so necessarioy mad, that not to be mad would amount to another form of madness." Blaise Pascal: "Pensées". "Delirium for vocalist without perfect pitch" immediately appears to be a scarcely possible job for any vocalist without perfect pitch to execute all the formidably demanding techniques required in the score. However, it is exactly through such technical impossibility and infeasibility that the piece depicts the nearly insane state of delirium. The piece is dedicated to the "Guandu Music Journal" for its fifth issue.
Hung, Chung-Kwun (2006) Delirium for Vocalist Without Perfect Pitch. In: Guandu Music Journal, pp. 189-192. Available at https://openmusiclibrary.org/article/144464/.