Pitch refers to the highness or lowness of notes in the music. Most pieces of music use a mixture of high and low sounds. Some instruments, for example the tuba, can play very low notes, whereas smaller instruments, such as the piccolo, can play very high notes. Pitch has to do with the frequency of a sound as one of the 3 major auditory attributes of sound: pitch (frequency), loudness (volume) and timbre (sound color). Frequency of oscillation times wavelength is the speed of sound. The speed of sound is 343 meters per second at 20 degrees celsius.