WEEK/TERM: THIRD TERM/WEEK 1
DATE: 27.04.2020
CLASS: J.S.S 2
SUBJECT: MUSIC
TOPIC: MUSICAL ALPHABETS / OCTAVE
REFERENCE:
BRIEF EXPLANATION: Music theory is the study that allows us to understand the language of music. Music theory helps to interpret musical composition, communication with other musicians, and become confident in creating and preforming music.
NOTES FOR THE STUDENTS
Identification of musical alphabets.
The music alphabet consist of seven(7) letters namely, A, B, C, D, E, F, G. each note has a unique pitch, notes are the building blocks for all music.
This music alphabet can be used repeatedly, that is over and over again. From any letter and end on the same letter.
Illustration 1
Here we draw a sphere to show how the music alphabet evolves.
SCALE: when you write from one letter and end it on the same letter.
Example
A B C D E F G A
B C D E F G A B
C D E F G A B C
This is known as a scale
Octave: As we all know that in Mathematics, an eight(8) sided plane shape or polygon is called octagon, in music likewise an octave is the eight note of a musical scale in which the 8th, (the last) note is usually the repetition of the first.
Example
1.) D E F G A B C D = D – D
1 2 3 4 5 6 7 8
2.) E F G A B C D E = E – E
1 2 3 4 5 6 7 8
3.) G A B C D E F G = G-G
1 2 3 4 5 6 7 8
4.) F – F
5.) A – A
Exercise / Assignment
How many musical alphabets do we have?
Write the octave of each of the following.