What is the key of G?

As a music theory expert with a deep understanding of the intricacies of musical keys and scales, I can provide you with a comprehensive explanation of the key of G.
The key of G is one of the most fundamental keys in Western music. It is a major key, which means it is based on a major scale. The major scale is a specific pattern of whole and half steps that defines the structure of the key. In the case of the key of G, the pattern of whole and half steps is as follows: whole, whole, half, whole, whole, whole, half. This pattern is commonly referred to as the "W-W-H-W-W-W-H" pattern.
The pitches that make up the G major scale are G, A, B, C, D, E, and F♯. Notice that there is a sharp (♯) on the F. This is because the key signature of the key of G has one sharp, which is F♯. The key signature is the set of accidentals that appear at the beginning of a staff to indicate the key of a piece of music. In the case of the key of G, the key signature is F♯.
The key of G is often referred to as the "tonic" of the scale. The tonic is the first note of the scale and serves as the foundation upon which the other notes are built. In the key of G, the tonic is G.
The key of G is closely related to the G major chord. A chord is a combination of three or more notes played simultaneously. The G major chord is formed by combining the root (G), the major third (B), and the perfect fifth (D). The G major chord is often used as the "home" chord in pieces written in the key of G, providing a sense of resolution and finality.
The key of G is also related to the G minor scale. The G minor scale is similar to the G major scale, but it has a different pattern of whole and half steps. The pattern for the G minor scale is whole, half, whole, whole, half, whole, whole. This pattern is often referred to as the "W-H-W-W-H-W-W" pattern. The G minor scale has one flat, which is B♭.
The key of G is a versatile key that is used in a wide variety of musical styles and genres. It is particularly well-suited for pieces that require a bright, uplifting sound. The key of G is also commonly used in classical music, where it is often associated with themes of joy and triumph.
In addition to its use in major and minor scales, the key of G is also used in other types of scales, such as the G pentatonic scale and the G blues scale. These scales are derived from the G major scale but have a different pattern of notes, which gives them a distinct sound and feel.
In conclusion, the key of G is a major key that is based on the G major scale. It has a key signature of one sharp, F♯, and is characterized by its bright, uplifting sound. The key of G is used in a wide variety of musical styles and genres, and is closely related to the G major chord and the G minor scale. Understanding the key of G is essential for anyone studying music theory or pursuing a career in music.

G major (or the key of G) is a major scale based on G, with the pitches G, A, B, C, D, E, and F?. Its key signature has one sharp, F?.