• “If you are a singer no matter what talent, age, career – THROGA just makes instinctive sense. I will be recommending all singers to have a go and believe for themselves!”

    Jim Bostock (Bostock Institute)
  • “This is the best way to keep your voice in check and in shape!! Check out THROGA and it will change your vocal life!”

    Craig Campbell (Broken Bow Records)
  • “Richard helped me a lot on America’s Got Talent Season 7 and The Voice Season 6! He is an awesome vocal coach! Check THROGA out!”

    Bria Kelly (The Voice)
  • “THROGA is a brilliantly conceived approach to vocal development. From beginner to advanced, every singer is appropriately challenged!”

    Mark Baxter (Vocal Coach – Steven Tyler / John Rzeznik)
  • “THROGA has revolutionized the way I see singing! If you’re a singer, professional speaker, or someone interested in learning about the science and the development of the human voice, this is for YOU!”

    Cesar De La Rosa (Yo Soy El Artista)