G7

Definition

The g7 chord, or G dominant seventh chord, is a four-note chord built from the root note G, the major third B, the perfect fifth D, and the minor seventh F. This chord plays a crucial role in both major and minor keys as it creates tension that resolves to the tonic, making it a foundational element in tonal harmony.

5 Must Know Facts For Your Next Test

1. The g7 chord is often used in jazz, blues, and rock music for its strong resolution to the tonic chord.
2. In a major key, g7 is the dominant seventh chord built on the fifth degree (V7), while in a minor key, it is often used as a leading tone dominant chord that enhances the harmonic progression.
3. The inclusion of the minor seventh (F) in the g7 chord adds dissonance that needs to resolve, creating forward momentum in music.
4. When resolving from g7 to C major (the tonic), the F note typically moves down to E, enhancing the resolution.
5. In functional harmony, g7 is essential for establishing key centers and modulations within a piece.

Review Questions

• How does the g7 chord function within major and minor keys?
  • In major keys, the g7 chord functions as the dominant seventh chord built on the fifth scale degree. It creates tension that seeks resolution to the tonic chord. In minor keys, g7 serves a similar purpose but is often used as a leading tone dominant. The presence of the minor seventh note (F) enhances this tension and drives towards resolution to the tonic more effectively.
• Compare and contrast the use of g7 in major versus minor key contexts.
  • In major keys, g7 acts as a V7 chord leading smoothly into the tonic by creating strong harmonic pull. In contrast, when used in minor keys, it often functions as a leading tone dominant that resolves back to the tonic but emphasizes the raised seventh scale degree. This gives it a unique sound character in each context; while both create resolution, their harmonic roles differ due to how they relate to other chords in their respective scales.
• Evaluate how the g7 chord contributes to tension and resolution in musical compositions.
  • The g7 chord plays a pivotal role in establishing tension within musical compositions by introducing dissonance through its structure. This tension is particularly effective when leading into the tonic chord, creating a satisfying resolution. By understanding how composers use g7 chords strategically within harmonic progressions, one can analyze their emotional impact on listeners and how they drive musical narratives forward.

Related terms

Dominant Chord: A chord built on the fifth degree of a scale, creating tension that typically resolves to the tonic.

Tonic: The first note of a scale that serves as the home base or resolution point in tonal music.

Seventh Chord: A chord consisting of four notes: the root, third, fifth, and seventh, which can be major, minor, or diminished.