Simplify the following text for a Grade 9 native English-speaking person.
Original: Candidates are required to pass Grade 5 Theory or Grade 5 Practical Musicianship or Grade 5 Jazz in order to progress to practical exams at Grades 6 , 7 and 8 .
Simplified: For grades 6 and above it is necessary to have passed Grade 5 Theory or Practical Musicianship or Jazz .