Language courses were among the first things audio ever did genuinely well, and Innovative Language Learning built a business on that fact. The company is the publisher behind the Pod101 family of courses, JapanesePod101 chief among them, with sister programmes covering dozens of other languages under the same house method.
The method is consistent wherever it is applied. Short dialogue-led lessons recorded by native speakers, with a host walking the learner through each exchange line by line: what was said, what it means, why the grammar behaves that way, and how the sentence can be reused tomorrow. Vocabulary is drilled through repetition rather than presented as lists, and cultural notes arrive alongside the language instead of being quarantined in a separate chapter.
It is teaching designed for headphones, for commutes and walks and washing-up, and for learners who would rather hear a language in use than read about its rules.