Oriģināls: Choir Builders For Growing Voices. Book, Sheet Music, CD. Rollo Dilworth. Choir Builders For Growing Voices.
Tulkojums: Kora Builders audzēšanai Voices. Grāmata, nošu, CD. Kora Builders audzēšanai Voices. 2 features 24 Vocal Exercises for Warm-up & Workout.