Watch the Head Voice online guitar lesson by Karan Andrea from Guitar Player Wanted: Vocals A Plus

When you are singing high notes, you are in your head voice - which resonates primarily in your head, but keeping your larynx in its natural position gives it a full, rich tone. You may also hear the term falsetto which describes a head voice technique where there is less volume to the voice, no real chest resonance to speak of, and it sounds lighter and airier than fully supported head voice. Robert Plant used his head voice and falsetto quite a bit, and to dramatic effect with Led Zeppelin.