This document provides an overview of electronic and chance music from the 20th century. It defines electronic music as music that uses electronic processing and oscillators to create sounds. Chance music, also called aleatoric music, uses random or unpredictable elements. The document profiles influential electronic musicians like Edgar Varese and Karlheinz Stockhausen and chance musician John Cage. It then instructs students to form groups and create original 2-minute performances of either electronic or chance music to perform in class. They will use devices or found objects to record or make sounds. The best performance will win an award. As an assignment, students are asked to explore making chance music at home with family members.

1. CLASSROOM
OBSERVATION
Grade 10 Music

2. Learning Competency:
 explains the performance practice (setting,
composition, role of composers/performers,
and audience) of 20th century music;
(MU10TCIb-g-4)
 performs music sample from the 20th century
(MU10TCIb-5)

3. Specific Objectives:
 1. Describe the new musical styles of the
20th century music;
 2. Explain the techniques and style of
electronic and chance music; and
 3. Perform music sample following the
techniques and styles of the 20th century
music.

4. Electronic Music
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Chance Music
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5. ELECTRONIC
MUSIC

6.  Electronic music, any music involving
electronic processing, such as recording and
editing on tape, and whose reproduction
involves the use of loudspeakers.
 It is usually operated with a keyboard. It
creates sound electronically using something
called an oscillator. Oscillators vibrate in a
steady way, creating a musical note at a
constant pitch. When it was invented, this
technology allowed musicians to create
sounds which weren't possible on traditional
ELECTRONIC MUSIC

7.  Music that uses tape recorder is called
Musique concrete or concrete music.
 In music concrete, the composer is able to
expirement with different sounds that cannot
be produced by regular musical instruments
such as the piano or violin.
ELECTRONIC MUSIC

8. Edgar Varese (1883-
1965)
Was born on Dec. 22, 1883, France.
He was considered an “innovative
French-born composer”.
His compositions are characterized by
an emphasis on TIMBRE and RHYTHM.
He invented the term “Organized
Sound”
Called the “Father of Electronic Music”

9. Karlheinz Stockhausen
(1928)
Born on 1928 in Cologne, Germany.
He is a central figure in the realm of
Electronic music.
Stockhausen’s music was initially met
with resistance due to heavily atonal
content.
Still he continued to experiment with
“musique concrete”

11. CHANCE
MUSIC

12. CHANCE MUSIC
“aleatoric”, Refers to the style in which
the piece sounds different at every
performance.
Most of the sounds emanate from the
surroundings both natural and man-made.
Combination of external sounds cannot
be duplicated as each happens by
chance.

13. John Cage (1912-1992)
Was born on Sept. 5, 1912 in LA California,
USA.
One of the 20th century composers with the
widest array of sounds in his works.
He challenge the very idea of music by
manipulating musical instruments to achieve
new sounds – Chance music.
Became famous for his composition “Four
Minutes and 33 Seconds, a chance musical
work.

16. It’s Showtime!
• The class will be divided into 4 groups.
• Each group will create an original 2-minute performance of
Chance music or Electronic music to perform in class. Choose
one only.
• Each group may use the devices they’ve brought earlier for
electronic music to record (preferably cellphones with any
music apps) while for Chance music they may use any
equipment to use in producing sounds accompanying their
choice of song. Be creative.
• Have a name of your group for the presentation.
• The teacher will select a group to win “BEST PERFORMANCE”
award.

17. Assignment!
•“FAMILY BONDING”
•Explore more on creating chance
music at home Include now this
time your family members for family
bonding.