G, also called ****Sol or So, is the fifth note of the fixed-do solfège starting on C. It is the fifth note and the eighth semitone of the solfège. As such it is the dominant, a perfect fifth above C or perfect fourth below C. When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of middle G (G4) note is approximately 391.995 Hz. See pitch for a discussion of historical variations in frequency. It has enharmonic equivalents of F (F-double sharp) and A (A-double flat). In the medieval period the musical note G was known as gesolreut within the Guidonian hand hexachord system.

Designation by octave

Scales

Common scales beginning on G

Diatonic scales

Jazz melodic minor

In popular culture

It is the first note of the 2006 song "Welcome to the Black Parade" by My Chemical Romance, which made the note a meme.