This chapter presents data on vowel harmony systems from Ho and Santali, languages belonging to the Munda family of the Austroasiatic language phylum. The Munda family provides a wide range of scenarios for restricted vowel harmony systems of height, tense/lax, or tongue-root harmony operating within the domain of a single foot. These may be seen to emerge, change, and decay over time. Ho is unusual in that, despite being a language with only five phonemic vowels, it shows harmony. The study is preliminary; more research is needed on the origins, extent, and nature of vowel harmony processes in Munda languages.
