Unit+1

Unit 1 Vocab Definitions:

Tetrachord - whole whole half (D, E, F for instance) Semitone - a half step Rhythm - recurring at regular intervals Meter - the basic pattern of beats in successive measures of a piece of music: it is usually indicated in the time signature Time Signature - The **time signature** (also known as "meter signature") is a notational convention used in Western musical notation to specify how many beats are in each measure and what note value constitutes one beat. 4/4 = one beat per quarter note.

There are four different types of metre in common use:
 * simple duple (ex. 2/2)
 * simple triple (ex. 3/4)
 * simple quadruple (ex. 4/4)
 * compound duple (ex. 6/8)
 * compound triple (ex. 9/8).
 * compound quadruple (ex. 12/8)

Asymmetrical Meter - a meter such as 5/8 or 7/4 where there is unequal division of the measure. the accents occur irregularly Beam - A **beam** in musical notation is a thick line frequently used to connect multiple consecutive eighth notes (quavers), or notes of shorter value (indicated by two or more beams), and occasionally rests. //Beamed// notes or rests are groups of notes and rests connected by a beam; the use of beams is called //beaming//. Measure - a bar or measure is a segment of time defined as a given number of beats of a given duration. Hemiola - In modern musical parlance, a **hemiola** is a metrical pattern in which two bars in simple triple time (3/2 or 3/4 for example) are articulated as if they were three bars in simple duple time (2/2 or 2/4). Augmentation - In music and music theory **augmentation** is the lengthening or widening of rhythms, melodies, intervals or chords. Diminution - Diminution is the opposite of augmentation.

Tempo - the speed at which a composition is to be played Presto - very fast (168–200 bpm) Vivace - lively and fast (≈140 bpm) Allegro - fast and bright or "march tempo" (120–168 bpm) Andante - at a walking pace (76–108 bpm) Adagio - slow and stately (literally, "at ease") (66–76 bpm) Largo - very slow (40–60 bpm), like //lento// Grave - slow and solemn