found: Work cat.: 2008004701: Soder, A. Sprechstimme in Arnold Schoenberg's Pierrot lunaire, c2008:Ch. 1 of ECIP galley (Sprechstimme first appeared on the musical scene in 1897 in Engelbert Humperdinck's melodrama Konigskinder; Humperdinck replaced traditional oval noteheads with "x"s, but still notated them on a full staff with a clear melodic contour)
found: New Grove online, Feb. 4, 2008(Sprechstimme. Term used interchangeably, in general, with Sprechgesang)
found: New Grove online, Feb. 4, 2008(Sprechgesang. A type of vocal enunciation intermediate between speech and song)
