- In Western classical music, obbligato (Italian pronunciation: [obbliˈɡaːto], also spelled obligato) usually describes a musical line that is in some way indispensable in performance. Its opposite is the marking ad libitum. It can also be used, more specifically, to indicate that a passage of music was to be played exactly as written, or only by the specified instrument, without changes or omissions. The word is borrowed from Italian (an adjective meaning mandatory; from Latin obligatus p.p. of obligare, to oblige); the spelling obligato is not acceptable in British English, but it is often used as an alternative spelling in the US. The word can stand on its own, in English, as a noun, or appear as a modifier in a noun phrase (e.g. organ obbligato).
- Human (Wikipedia)
Humans, or modern humans (Homo sapiens), are the most common and widespread species of primate. A great ape characterized by their hairlessness, bipedalism, and high intelligence, humans have a large brain and resulting cognitive skills that enable them to thrive in varied environments and develop complex societies and civilizations. Humans are highly social and tend to live in complex social structures composed of many cooperating and competing groups, from families and kinship networks to political states. As such, social interactions between humans have established a wide variety of values, social norms, languages, and rituals, each of which bolsters human society. The desire to understand and influence phenomena has motivated humanity’s development of science, technology, philosophy, mythology, religion, and other frameworks of knowledge. Humans in fact study themselves, through such domains as anthropology, social science, history, psychology and medicine.