The emergence of so many different kinds (or 'varieties') of international English has caused a number of linguists to question the use of native speaker pronunciation models in the teaching of English.
Rhythm is both a feature of and product of the phonological structure of English. The phonology of any language is a system, so that a change in one part of the system will affect some or all of the other parts.
Like us, you might already use songs in class, and find that your students enjoy them. But have you considered choosing songs specifically to work on pronunciation?
Teaching pronunciation used to involve little more than identifying and practising the sounds of which a language is composed, that is to say, its phonemes.
Sentence stress is a difficult area to work on for learners and teachers alike. For this reason it's also an area which is often neglected, but this aspect of the language can cause problems for learners in both their speaking and perhaps more importantly listening.