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
Terminology model Terminology model A terminology model is a refinement of a concept system. Within a terminology model the concepts (object types) of a specific problem or subject area are defined by subject matter experts in terms of concept (object type) definitions and definitions of subordinated concepts or characteristics (properties). Besides object types, the terminology model allows defining hierarchical classifications, definitions for object type and property behavior and definition of casual relations. The terminology model is a means for subject matter experts to express their knowledge about the subject in subject specific terms. Since the terminology model is structured rather similar to