Year 7 Music · Responding — Listen and Analyse · 8m read

Instruments and Ensembles

From orchestras to rock bands, instruments combine in ensembles. Knowing families and sounds helps you listen and compose.

Learning objective: Identify instrument families and describe how instruments produce sound.

By the end of this lesson you can:

• I can name the orchestra families.
• I can explain how sound is produced.
• I can recognise instruments by ear.

An orchestra is a kitchen brigade. In a restaurant kitchen, each cook has a station — grill, pastry, sauces. In an orchestra, each family has a role: strings carry the melody and warmth, woodwinds add colour, brass brings power, and percussion keeps time and adds drama. The conductor is the head chef.

Instruments and Ensembles

ORCHESTRA FAMILIES:
• STRINGS — violin, viola, cello, double bass (bowed or plucked).
• WOODWIND — flute, clarinet, oboe, bassoon (air across or through reeds).
• BRASS — trumpet, horn, trombone, tuba (buzzing lips).
• PERCUSSION — drums, timpani, xylophone (struck or shaken).

OTHER ENSEMBLES:
• Rock band (guitar, bass, drums, keys, vocals), jazz combo, choir, gamelan.

FIRST NATIONS INSTRUMENTS:
• Yidaki (didjeridu, from Arnhem Land), clapsticks — used within cultural protocols.

| Family | How sound is made | Examples | Typical role |
|---|---|---|---|
| Strings | Bowing or plucking strings | Violin, cello, double bass | Melody, harmony, warmth |
| Woodwind | Air across an edge or through a reed | Flute, clarinet, oboe | Colour, solos |
| Brass | Buzzing lips into a mouthpiece | Trumpet, horn, tuba | Power, fanfares |
| Percussion | Striking or shaking | Timpani, snare, xylophone | Rhythm, effects |

Key ideas at a glance

• Classify by sound production: Not by material — a saxophone is metal but woodwind.
• Bigger instrument = lower pitch: Double bass is lower than violin; tuba lower than trumpet.
• Ensembles vary: Rock bands, jazz combos, gamelans and choirs are ensembles too.
• Respect cultural instruments: Some, like the yidaki, have cultural protocols about who may play them.

Worked example (Easy)

Which family does the clarinet belong to?

1. Sound production. Air vibrates a single reed.
2. Family. Woodwind.

Answer: Woodwind.

Worked example (Easy)

Why does a double bass sound lower than a violin?

1. Size. Longer, thicker strings vibrate more slowly.
2. Pitch. Slower vibrations = lower pitch.

Answer: Its longer, thicker strings vibrate more slowly, producing lower notes.

Common mistakes

• Calling the saxophone brass It uses a reed, so it is woodwind. Fix: Classify by how sound is made.
• Grouping instruments by appearance The flute is metal but is woodwind. Fix: Ask how the sound is produced.

The yidaki — more than an instrument

The yidaki (often called didjeridu) comes from the Yolŋu people of north-east Arnhem Land. It is made from a eucalyptus branch hollowed out by termites.

Players use circular breathing — breathing in through the nose while pushing stored air out of the cheeks — to keep a continuous drone.

In Yolŋu culture the yidaki is connected to ceremony and law, and there are protocols about who plays it and in what context; in many communities it is traditionally played by men. Learning about it respectfully means understanding these cultural meanings, not just the sound.

Practice questions

1. Which instrument is in the brass family?

   1. Flute
   2. Trombone
   3. Cello
   4. Xylophone

   (1 marks)

2. How do string instruments make sound?

   (2 marks)

3. Which instrument is a woodwind even though it is made of brass?

   1. Trumpet
   2. Saxophone
   3. Tuba
   4. Trombone

   (1 marks)

4. Which family usually provides rhythm and special effects?

   1. Strings
   2. Woodwind
   3. Brass
   4. Percussion

   (1 marks)

5. Choose an ensemble other than an orchestra and describe the role of two instruments in it.

   (2 marks)

Summary

• Strings, woodwind, brass, percussion.
• Classify by sound production.
• Many ensemble types worldwide.
• Bigger instruments generally produce lower pitches.