The focus of this article is the origins of (1) reduced vowels in languages of the Balkan Sprachbund, (2) lenition of soft stops, (3) its (pre)nasalization, (4) the change of ‑n‑ into ‑r‑ in the Tosk dialect of Albanian and a similar process in Old Romanian as well as the Istro‑Romanian, Maramuresh and Oltenian dialects of this language, a parallel change of Latin ‑l‑ into ‑r‑ in common Romanian and certain Italian dialects.