The speakers of Muslim communities living in Greek Thrace are typically trilingual in Romani, Turkish and Greek. In an earlier work (Adamou 2010) it is said that Thrace Romani is an example of a fused lect, defined as a form of stabilized codeswitching (Auer 1998). The claim was that Turkish constituents were part of Romaniʼs grammar and that, unlike codeswitching and language mixing, were not subject to variation. The present work contributes to this discussion through a corpus-driven analysis of Thrace Romani. The analysis of a 5,000 word conversational corpus establishes a quantification of the mixing of the three languages, per word class and per speaker, showing that in a majority of cases switching is insertional and that there is little inter-speaker variation.