His music is a blend of sept and indie rock now referred to as the Dhegiha sound.    From Wordnik.com.  [Punk Reviews] Reference

Of the Quapaw dialect proper, little has been recorded beyond some brief vocabularies and word lists, but of the so-called Dhegiha language, including the dialects of the Omaha, Ponca, Osage, Kansa, and Quapaw, extended study and publication have been made, particularly by Rev. J.O. Dorsey under the auspices of the Bureau of.    From Wordnik.com.  [The Catholic Encyclopedia, Volume 12: Philip II-Reuss] Reference

In fact, with this word any of the Dhegiha languages would produce pretty much the same effect on English ears.    From Wordnik.com.  [languagehat.com: KOONTZ ON SIOUXAN LANGUAGES.] Reference

Maybe final "ka" did represent phonetic /ka/ LCPA kah, in which case, it would have to be a Dhegiha form something like the Omaha-Ponca version that was the source.    From Wordnik.com.  [languagehat.com: KOONTZ ON SIOUXAN LANGUAGES.] Reference