Pronunciation is an essential part of acquiring a second language, but far too often little time is spent on teaching it (Kelly 1969). It seems as if it is generally thought that pronunciation is something that will develop on its own, yet learners are still assumed to maintain a certain level. This paper investigates the effects of explicit pronunciation and phonetics teaching on the English speech production of advanced Dutch learners of English. The pronunciation of advanced university learners was investigated at several points over a period of three years, halfway during which their pronunciation teaching was stopped. The effect this termination had on their speech production was investigated, as well as any task-specific differences i...