DoctorVox Is The Singer's Secret Weapon... Just Ask I PREVAIL's Brian Burkheiser

DoctorVox, the singer's secret weapon, is a "must have" tool that helps vocalists maintain their voice. Owned by vocal coach Jaime Vendera and I Prevail singer Brian Burkheiser, both have used this device to keep their voices in top form. The DoctorVox is the singer's and speaker's secret weapon to...