ocr: a AUS - - - - a - HEOR Nature OfSound Play 16of16 Summary: For organized sound to be musical, it must have pitch (a specific level oftone, high or low, that you can hum), timbre (the "color" or quality ofthe sound that allows you to recognize what instrument is playing), duration (a particular length oftime that the sound lasts), and dynamics (the level ofloudness or softness of the sound). There are some instruments that have only 3 ofthese 4 components. They are the non-pitched percussion instruments. Timbre Pitch These make sounds that you cannot Oboe hum a specific note to which are used m ...