Sagot :
Answer: Beat and Meter
A beat is what gives music its rhythmic pattern; it can be regular or irregular. Beats are grouped together in a measure; the notes and rests correspond to a certain number of beats. Meter refers to rhythmic patterns produced by grouping together strong and weak beats. A meter may be in duple (two beats in a measure), triple (three beats in a measure), quadruple (four beats in a measure), and so on.
Dynamics
Dynamics refers to the volume of a performance. In written compositions, dynamics are indicated by abbreviations or symbols that signify the intensity at which a note or passage should be played or sung. They can be used like punctuation in a sentence to indicate precise moments of emphasis. Dynamics are derived from Italian. Read a score and you'll see words like pianissimo used to indicate a very soft passage and fortissimo to indicate a very loud section, for instance.
Harmony
Harmony is what you hear when two or more notes or chords are played at the same time. Harmony supports the melody and gives it texture. Harmonic chords may be described as major, minor, augmented, or diminished, depending on the notes being played together. In a barbershop quartet, for example, one person will sing the melody. The harmony is provided by three others—a tenor, a bass, and a baritone, all singing complimentary note combinations—in perfect pitch with one another.
Melody
Melody is the overarching tune created by playing a succession or series of notes, and it is affected by pitch and rhythm. A composition may have a single melody that runs through once, or there may be multiple melodies arranged in a verse-chorus form, as you'd find in rock 'n' roll. In classical music, the melody is usually repeated as a recurring musical theme that varies as the composition progresses.
Pitch
The pitch of a sound is based on the frequency of vibration and the size of the vibrating object. The slower the vibration and the bigger the vibrating object, the lower the pitch; the faster the vibration and the smaller the vibrating object, the higher the pitch. For example, the pitch of a double bass is lower than that of the violin because the double bass has longer strings. Pitch may be definite, easily identifiable (as with the piano, where there is a key for each note), or indefinite, meaning pitch is difficult to discern (as with a percussion instrument, such as the cymbals).
Rhythm
Rhythm may be defined as the pattern or placement of sounds in time and beats in music. Roger Kamien in his book "Music: An Appreciation" defines rhythm as "the particular arrangement of note lengths in a piece of music." Rhythm is shaped by meter; it has certain elements such as beat and tempo.
Tempo
Tempo refers to the speed at which a piece of music is played. In compositions, a work's tempo is indicated by an Italian word at the beginning of a score. Largo describes a very slow, languid pace (think of a placid lake), while moderato indicates a moderate pace, and presto a very fast one. Tempo can also be used to indicate emphasis. Ritenuto, for instance, tells the musicians to slow down suddenly.
Texture
Musical texture refers to the number and type of layers used in a composition and how these layers are related. A texture may be monophonic (single melodic line), polyphonic (two or more melodic lines) and homophonic (the main melody accompanied by chords).
Timbre
Also known as tone color, timbre refers to the quality of sound that distinguishes one voice or instrument from another. It may range from dull to lush and from dark to bright, depending on technique. For example, a clarinet playing an uptempo melody in the mid to upper register could be described as having a bright timbre. That same instrument slowly playing a monotone in its lowest register could be described as having a dull timbre.
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