Voice Lessons to Go 1: Vocalize & Breath
Voice Lessons to Go V.4- Stamina
Voice Lessons to Go V.3- Pure Vowels
The Deva Method: Vocal Warm-Ups and Cool-Downs
Voice Lessons to Go 1-4 : Complete Set
Sing Now! Voice Lessons for Beginners
Singing For Dummies
Voice Lessons to Go: Vocal Repair
Vocal Exercises: for Building Strength, Endurance and Facility (Hal Leonard Pro Vocal)