Modulation
Changing key within a phrase: the five related keys, a modulation to each kind of related key in its own lesson, the pivot chord that joins two keys, and hearing where a passage ends up.
Start with The five related keys. In 12 minutes you will be able to name the five related keys of any key.
Lessons
Practise and test
Brainlag's own Grade 7 level course, not an exam board's syllabus. Every example and question is original. Results are Brainlag estimates.