These vocal exercises are not a substitute for a voice coach. They are meant to warm-up your voice.
The exercises are broken up into four sets.
Exercises are centered on the two octave vocal ranges listed below. For reference, middle-C is C4.
To start warming up, select a set, then select your part. Playback will start automatically. Sing easy. Vocal warm-ups don't need to sound beautiful and they you should never strain your voice.