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A perfect fourth is a musical interval spanning exactly 5 semitones—the distance between two notes where the upper note vibrates […]

A major third is a musical interval—the distance in pitch between two notes—that spans exactly 4 semitones. This interval has

The musical note system spans from extremely low (infrasonic, below human hearing) to extremely high (ultrasonic, above human hearing). The

Instruments go out of tune because they’re physical objects responding to environmental and mechanical stress. Strings stretch and lose tension.

A standard six-string guitar is tuned to six specific pitches: E-A-D-G-B-E (lowest to highest). These frequencies are determined by equal

A standard violin has four strings tuned to four different pitches. From lowest to highest: G3 (196 Hz), D4 (293

Voice pitch is perception—what your ear and brain interpret when they hear vocal vibration. Voice frequency is measurement—the objective number

Voice types are categories based primarily on pitch range but also on tone quality and where the voice sits most

Voice pitch is the perceived highness or lowness of your voice, determined by how fast your vocal cords vibrate. The

Pitch is a single note’s frequency—an acoustic property of sound. A4 = 440 Hz is a pitch. A key is