Falsetto register is a term that is applied especially to men to the high “feminine” quality sound available to most above the chest (normal speaking) register. Some call this head register. Falsetto is used in some countertenor voices and, in other cases, for comic effect. Some use “falsetto” as a term to denote the voice quality above the first break, whether in the male or female voice. This is the quality used by female classical singers, as compared with a more intense chest voice phonation used in most popular styles. The language and concepts used to describe vocal registers vary widely; hence, care is warranted so as to not take any single definition, such as ours, too seriously!