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Orchestra Instrument Families Explained

Tap a family to see which instruments belong to it.

String Section

The largest section of a typical orchestra, including violins, violas, cellos, and double basses, all producing sound through vibrating strings played with a bow or plucked by hand.

Woodwind Section

Includes flutes, oboes, clarinets, and bassoons, which produce sound by vibrating air, either across an open hole or through a reed, and were traditionally made of wood (though flutes today are usually metal).

Brass Section

Includes trumpets, French horns, trombones, and tubas, which produce sound through the vibration of the player's lips against a metal mouthpiece, generally the loudest section of the orchestra.

Percussion Section

Includes timpani, snare drums, cymbals, and a wide range of other instruments played by striking, shaking, or scraping, used to provide rhythm and dramatic accents.

Typical Seating Arrangement

Orchestras are typically arranged with strings at the front closest to the conductor, woodwinds and brass behind them, and percussion at the very back, though exact arrangements vary by orchestra and conductor preference.

Why the string section is the largest

The string section makes up roughly half of a full orchestra's musicians, because string instruments generally produce a softer sound individually than brass or percussion, so more players are needed to balance the overall sound of the ensemble.

Frequently Asked Questions

Is the piano part of the orchestra?

The piano is not a permanent member of the standard orchestra sections, but it is often included as a featured solo instrument in piano concertos or added for specific pieces that call for it.

Why are woodwinds called "woodwind" even when made of metal, like flutes?

The category is based on historical tradition and how the sound is produced (vibrating air through a reed or across a hole) rather than the material β€” flutes were originally made of wood, so they remained classified as woodwinds even after most modern flutes switched to metal.