Final answer:
The guitar is classified based on the vibration of its strings and the air inside its body, which create standing waves in these two media. As a stringed instrument, it is prominent in rock music, which often combines electric instruments with high volume levels.
Step-by-step explanation:
In the context of musical instruments and their classification, the production of sound is a crucial factor. The guitar, for instance, produces sound when its strings vibrate. This vibration causes standing waves to occur in two media: a. The guitar string and b. The air inside the guitar. This is because the strings' vibrations transfer energy to the air in the guitar's body, amplifying the sound. In contrast, the air surrounding the guitar or the ground beneath the musician does not directly participate in creating standing waves for a plucked string.
When discussing various types of musical genres, rock music typically places a strong emphasis on electric guitars and basses, often with high volume levels, exemplified by bands like U2. The evolution of rock and roll came from a combination of electric instruments with the sounds of gospel, blues, country, jazz, and R&B. Reference to Victor Wooten in a Ted lecture highlights that a bass, like a guitar, is also a stringed instrument, and both are used powerfully in various musical genres for communication and emotional expression.
The size of the musical instrument is directly related to the wavelengths of sound it produces, and the pitch range depends on the instrument's size. Smaller instruments typically produce higher pitches with short-wavelength sounds, while larger instruments produce lower pitches with long-wavelength sounds.