Voice type and below the countertenor voice. The "leggero" tenor has the highest tessitura of all the tenor subtypes. Tenor subtypes: Tenors are often divided into different subcategories based on range, vocal color or timbre, the weight of the voice, and dexterity of the voice. Tenors are often broken down into seven subcategories: "tenore contraltino", "leggero" tenor or "tenore di grazia", lyric tenor, spinto tenor or "tenore spinto", dramatic tenor, heldentenor, and baritenor. Famous tenors include Enrico Caruso, Juan Diego Flórez, Alfredo Kraus, and Luciano Pavarotti. Baritone range: The baritone voice is the middle-range voice type for males; it lies between the
Estill Voice Training Jo Estill has described it as "happy yelling".' Belt quality also uses clavicular breathing and has the longest closed phase with the highest subglottic pressure and the greatest glottic resistance. Estill Voice International governs the Estill Voice Training Certification Programme. There are three forms of Estill Voice Training certification available for individuals: Estill Voice Training has been adopted by voice professionals worldwide and a list of certified instructors is published by Estill Voice International. Joan Melton describes the Estill Voice Training terminology as a part of the language of singing teachers in Australia, with terms such as twang and anchoring