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A piece for two pianists performing together on separate pianos is a "piano duo". "Duet" is also used as a verb for the act of performing a musical duet, or colloquially as a noun to refer to the performers of a duet. A musical ensemble with more than two solo instruments or voices is called a trio, quartet, quintet, sextet, septet, octet, etc.
The terms duo, trio, quartet, quintet, sextet, septet, octet, nonet, and decet describe groups of two up to ten musicians, respectively. A group of eleven musicians, such as found in The Carnival of the Animals , is called an undecet , and a group of twelve is called a duodecet (see Latin numerical prefixes ).
The bonding in carbon dioxide (CO 2): all atoms are surrounded by 8 electrons, fulfilling the octet rule. The octet rule is a chemical rule of thumb that reflects the theory that main-group elements tend to bond in such a way that each atom has eight electrons in its valence shell , giving it the same electronic configuration as a noble gas .
Bass range: The bass is the lowest male voice. The bass voice has the lowest tessitura of all the voices. The typical bass range lies between E2 (the second E below middle C) to E4 (the E above middle C). In the lower and upper extremes of the bass voice, some basses can sing from C2 (two octaves below middle C) to G4 (the G above middle C). [3]
This is a list of musical genres within the context of classical music, organized according to the corresponding periods in which they arose or became common.. Various terms can be used to classify a classical music composition, mainly including genre, form, compositional technique and style.
There is a difference between the modern usage of the "head voice" term and its previous meaning in the renaissance as a type of falsetto, according to many singing professionals. These days, head voice is typically defined as a mix of chest and head voice, therefore created a stronger sound than falsetto. [ 15 ]
Period 2 elements (carbon, nitrogen, oxygen, fluorine and neon) obey the octet rule in that they need eight electrons to complete their valence shell (lithium and beryllium obey duet rule, boron is electron deficient.), where at most eight electrons can be accommodated: two in the 2s orbital and six in the 2p subshell.
A countertenor (also contra tenor) is a type of classical male singing voice whose vocal range is equivalent to that of the female contralto or mezzo-soprano voice types, generally extending from around G 3 to D 5 or E 5, [1] although a sopranist (a specific kind of countertenor) may match the soprano's range of around C 4 to C 6. [2]