The is not a flashy, modern app with gamification. Instead, it is a time-tested, systematic, and highly effective resource for serious learners. For anyone who struggles to be understood despite strong grammar and vocabulary, this audio set provides the auditory immersion and repetition needed to retrain the ear and the mouth. When used consistently alongside the book, it can significantly reduce a foreign accent and boost speaking confidence in American English settings.
The speaker on the CDs uses a accent, making it ideal for those targeting business or academic English in North America. However, the phonetic principles apply universally to any English dialect.
Here is a list of the tracks on CD 4: