16 books
Rebalance Your Voice
Mind Over Music
SingFit
Raise Your Voice
Reclaim Your Voice
Unleash Your Creative Mindset
Raise Your Voice 2
11 Simple Steps
What's Missing?
Sing Out Loud Book II
Sing Out Loud Book IV
Sing Out Loud Book III
Sing Out Loud Book I
The Ultimate Breathing Workout
Raise Your Voice Second Edition
The Ultimate Vocal Workout Diary