Music wiki:
>For other uses, see Music (disambiguation). Music is a natural intuitive phenomenon operating in the three worlds of time, pitch, energy, and under the three distinct and interrelated organization structures of rhythm, harmony, and melody. Since the music phenomenon is natural and intuitive, humans can also virtually perform and hear music in their minds, without even learning or understanding it.Traditionally, one of the major difficulties in defining music has been to use the word to try to describe all activities and things related to music and/or sound. For example, scores only become music through performance(s), or when (recorded) performances are replayed.
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Metal wiki:
>For alternative meanings see metal (disambiguation). In chemistry, a metal (Greek: Metallon) is an element that readily forms ions (cations) and has metallic bonds, and metals are sometimes described as a lattice of positive ions (cations) in a cloud of electrons. The metals are one of the three groups of elements as distinguished by their ionisation and bonding properties, along with the metalloids and nonmetals. On the periodic table, a diagonal line drawn from boron (B) to polonium (Po) separates the metals from the nonmetals. Elements on this line are metalloids, sometimes called semi-metals; elements to the lower left are metals; elements to the upper right are nonmetals.
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