The College Board has announced that there are May 2021 test dates available are May 3-7 and May 10-14, 2021.
In-depth preparation for the AP Music Theory exam features:
Two full-length practice tests (including aural and non-aural sections and free-response)
All questions answered and explained
Helpful strategies for test-taking success, including all seven free-response questions
In-depth review chapters covering course content, including music fundamentals, harmonic organization, harmonic progression, melodic composition and dictation, harmonic dictation, visual score analysis, and much more
The downloadable audio provides aural skill development prompts for both practice tests' aural sections, as well as material that complements exercises and examples in the subject review chapters.