Tubo Lax-Vox | La mejor herramienta de calentamiento vocal
Strengthen your vocal chords. The Lax-Vox Tube is the best vocal warm-up tool you will ever find. Developed by Marketta Sihvo, PhD, and Ilter Denizoglu, MD, the Lax-Vox Tube teaches you how to properly use your diaphragm in speech and singing.