This instrument's pipes were made of wood, and were graduated in length to produce different pitches.

Instruments that produce different pitches when struck in different places, such as the steel drum.

A larger bottle produces a lower musical pitch while smaller ones produce higher pitches.

There are several factors involved in producing different pitches on a brass instrument.

In order to produce higher pitches, the player had to "overblow", or increase the air stream to reach the next harmonic.

Melodic percussion, instruments used to produce several different pitches.

This allowed for different levels of tension to be placed on the counter hoop and, as a result, produced different pitches.

Opening and closing the holes produces higher and lower pitches.

However, fundamentally the whistle register is most commonly used to produce pitches above C6.

Some children, however, can produce pitches that surpass the upper limit of the keyboard.