e. pitch
People speak about "high" and "low" sounds quite unselfconsciously, as though they know that the latter actually have a low frequency-relatively few cycles-and the former a high frequency. The musical term for this quality of sound, which is recognized as pitch. Low pitches (low frequencies) result from long vibrating elements, high pitches from short ones.
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Answer:
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Explanation:
Actually, there is more than one, as Brazil has a mix of cultures (Indigenous, European, African) and this mixture produced many new instruments.
One example is atabaque, which can produce a variety of sounds: from higher to lower (but not very high,) and it can produce sharp and more fluid, sustaining sounds, too.
It's a percussion instrument because the sound is produced as a result of striking something (and not for example of a flow of air)