Musey is a Chadic language of Chad and Cameroon. There is a degree of mutual intelligibility with Masana. Although Musey and Masa are mutually unintelligible, many Musey speakers also speak Masa.
Musey is spoken east of Guéré, in the southern part of Mayo-Danay commune in Danay department, Far North Region, by 20,000 speakers in Cameroon. It is also spoken in Chad.
Lax allophones of /i u e o/ occur as [ê ààÃÂ].