The choice of a pronunciation model for the 21st century learner has become a major issue of debate among applied linguists concerned with teaching English. The standard pronunciation models - Received Pronunciation and General American - have recently been confronted with a new proposal of a Lingua Franca Core (LFC) or English as a Lingua Franca (ELF), put forward as a didactic priority in teaching English pronunciation to foreigners. This volume, which includes selected contributions from the Poznan Linguistic Meetings of 2003 and 2004, does not intend to present yet another model, but sets out to place the teaching and learning of English pronunciation in the context of the 21st century. As the needs of English users are clearly changing fast in the globalizing world, the question is to what extent, if at all, models of pronunciation have been able to keep up with them, and whether they in fact should do so. Thus, key issues in the integration of pronunciation into English as L2 curricula are explored.