How can I verify if my crystal singing bowls meet the minimum instrument requirements?

To verify if your crystal singing bowls meet the minimum instrument requirements for the course, you need at least 3 crystal singing bowls. One of these bowls must be in the 3rd octave, while the remaining bowls should be in the 4th octave. If you are unsure which octave your bowls are in, you can test them using a tuner.