Are you someone that can't be heard in meetings, on the phone, or even in the pub?  You're probably not connecting the sound to the words!  This exercise will open up your voice and help you communicate more effectively with others, and give you more confidence when speaking in public.  Sing part of your presentation on one note (intoning), then speak it. The sustained breathing you need when singing helps to bring out the sound or the tone of your voice. You'll create a warm deeper tone to your voice, creating more empathy with your clients and audience.  Do this with different pitches, always keeping the throat open