What Bowls are Required to Complete the L2 Crystal Singing Bowl Course? Tony Nec June 12, 2018 01:03 Updated Follow You need a minimum of 3 bowls that enable both harmonious and dissonant intervals to be created. Related articles What are the requirements to complete the Crystal Singing Bowls Level 2 Course? What is the course extension policy? Do you go as in depth into tibetan singing bowls in the multi instrument courses as you do the separate tibetan singing bowls course? What About Insurance? Is there a pre-requisite for the Level 2 Diploma Course? Comments 0 comments Please sign in to leave a comment.