- 50 Vocal Warmup Exercises for Soprano Voice · 2006
- 50 Vocal Warmup Exercises for Soprano Voice · 2006
- 50 Vocal Warmups Exercises for Alto Voice · 2010
- 50 Vocal Warmups Exercises for Alto Voice · 2010
- 50 Vocal Warmups Exercises for Alto Voice · 2010
- 50 Vocal Warmups Exercises for Alto Voice · 2010
- 50 Vocal Warmups Exercises for Alto Voice · 2010
- 50 Vocal Warmups Exercises for Alto Voice · 2010
- 50 Vocal Warmups Exercises for Alto Voice · 2010
- 50 Vocal Warmups Exercises for Alto Voice · 2010
- 50 Vocal Warmups Exercises for Alto Voice · 2010
- 50 Vocal Warmups Exercises for Alto Voice · 2010
- 50 Vocal Warmups Exercises for Alto Voice · 2010