Valuable Concepts for the Learning Musician
Transposition is the transferring of a given passage of music, interval by interval, to a different key or Clef.
There are 2 kinds of transposition. 1) Clef Transposition 2) Key Transposition
1. Clef Transposition: A melody can be moved from one clef to another. This can be 1 or 2 octaves from the given melody above or below, or it can be transferred from one Clef to another at the same pitch.
2. Key Transposition: The whole passage or piece is moved from one key to another, interval by interval, corresponding to the construction of the given example. It may also be transferred from one clef to another as you change the key.
The subject matter may be transposed any interval desired - Major, Minor, Augmented, Diminished or Perfect
If it starts in a Major Key, it will finish in a Major Key. If it starts in a Minor Key, it will finish in a Minor Key etc.
Legato & StaccatoLegato is to sing or play a passage smoothly
Staccato is the opposite. It means short and detached and definitely not smooth.
There are 3 kinds of staccato:1. Mezzo (or slurred) - sustain the sound 3/4 value, rest for 1/4 value. Mezzo staccato (moderately detached ) is sometimes indicated in words, or can be shown by either a tenuto above a staccato mark, or a slur that encompasses a phrase of staccato notes. (Tenuto means held. It alters either the dynamics or the duration of a note) 2. Dot - sustain the sound 1/2 value, rest for 1/2 value
In this example the dot staccato applies to both notes on each stem as they both share a common stemExample 2.
In the first bar, the Dot Staccato applies to both notes on each stem as above. In the second bar the dot staccato only upplies to the upper notes of each pair as they are on separate stems3. Dash (Staccatissimo) - sustain the sound 1/4 value, rest for 3/4 value
Dash Staccato or Staccatissimo
A slur is a symbol placed over or under a series of notes. It indicates that the notes are to be played without separation. This implies legato which is playing a passage smoothly. The notes are different pitches and can be different types. A slur can extend over two or several notes at a time, sometimes encompassing several bars of music.
The Slur For Different Instruments:
Bowed string instruments: indicates the notes should be played in one bow.
Wind instruments: indicates that the notes should be played without using the tongue to re-articulate each note.
Guitar music: indicates that the notes should be played without plucking the individual strings, i.e. slides, hammer-ons and pull-offs.
In vocal music, slurs are usually used to mark notes which are sung to a single syllable.
A slur is denoted with a curved line generally placed over the notes if the stems point downward, and under them if the stems point upwards.
An example of a slur
The slur is not to be confused with another similar musical symbols known as a Tie
The tie is a curved line that links two notes of the same pitch to show that their durations are to be added together.
Enharmonic ChangeEnharmonic change (alteration) means that the alphabetical name of the note is changed on an instrument but the key on the instrument is retained.
For example, each key on a piano can have 3 distinct names with one exception which can only have 2 (G# - A♭). The reason for that is because G# or A♭ are sandwiched between two other black keys. With no extra space, there is no room for another name. Ok, let's look at all the notes in the scale.
C : can be B# or Dbb C#: can be D♭ or B♭ D: can be C## or E♭♭ E♭: can be D# or F♭♭
E : can be D## or F♭ F: can be E# or G♭♭ F#: can be E♭♭ or G♭ G: can be F## or A♭♭
G# can be A♭ A: can be G## or B♭♭ B♭: can be A## or C♭♭ B: can be A## or C♭
If you have a keyboard handy, try this exercise for yourself.
Reference is made to this in the Major-Minor Scales Chart
Modulation means the transition of changing from one key to another, usually in the middle of a piece of music. This may or may not be accompanied by a change in key signature. There are a number of rules and considerations to take into account so that the transition from one key to the other is as smooth as possible.
The following is an excerpt from 'The Guitar Handbook' by Ralph Denyer. This is his introduction to the concept of modulation. He goes on with a detailed and concise explanation about modulation using primary chords and secondary chords along with and a very handy chart-application encompassing all keys.
SyncopationAccent is stress or emphasis on certain notes. When the accent is moved to a weak beat, syncopation is formed.
Syncopation is the placing of a regular accent formed according to the given time signature onto a normally unaccented beat or part of a beat.
In normal Duple, Triple and Quadruple Time, the accents are as follows:
- In Duple Time: (2 beats/bar) The accents are Strong - Weak
- In Triple Time: (3 beats/bar) The accents are Strong - Weak - Weak
- In Quadruple Time: (4 beats/bar) The accents are Strong - Weak - Medium - Weak
When we use syncopation, the accents are altered. This tends to define different styles of music.
For example, in reggae music (quadruple time) the strong accent is placed on the second beat rather than the first beat, giving you that distinctive reggae sound.
Weak - Strong - Weak - Medium OR Weak - Strong - Weak - Strong
A Tetrachord is a series of 4 notes in alphabetical order consisting of 2 tones and 1 semitone.
The tones occur between the 1st - 2nd, and 2nd - 3rd notes. The semitone is between the 3rd - 4th note.
Each Major Scale contains 2 Tetrachords:
1. Lower Tetrachord
2. Upper Tetrachord
- The Lower Tetrachord of 1 scale becomes the Upper Tetrachord of another
- The Upper Tetrachord of 1 scale becomes the Lower Tetrachord of another
- The Lower Tetrachord commences on the Tonic and ends on the Subdominant.
- The Upper Tetrachord commences on the Dominant and ends on the Upper Tonic
- Put simply, 2 tetrachords stacked on top of each other make up a major scale OR 1 tetrachord is equal to half a major scale