The Meaning of Tonic Chord in Music
In music, the tonic chord refers to the chord built on the first scale degree of a diatonic scale. It is considered the most significant chord in a piece of music and serves as the tonal center or final resolution tone ). The tonic chord is commonly used in the final cadence in tonal classical music, popular music, and traditional music ). It is often associated with a sense of stability and acts as a point of rest or resolution within a musical composition.
The tonic chord is named after the tonic note, which is the first note of a scale. For example, in the key of C major, the tonic chord would be the C major chord. The triad formed on the tonic note is the most important chord in these styles of music ). In Roman numeral analysis, the tonic chord is typically symbolized by the Roman numeral "I" if it is major and by "i" if it is minor ).
The tonic chord is significant because it establishes the tonality of a piece and provides a sense of home or stability. It is often used as a starting point for chord progressions and is frequently returned to throughout a composition to create a sense of resolution. The tonic chord can be contrasted with other chords, such as the dominant chord, which creates tension and a desire to resolve back to the tonic.
It's worth noting that the concept of the tonic chord can vary depending on the musical context and the specific harmonic conventions being used. In some cases, other chords may also have tonic function, such as the vi and iii chords. Additionally, the meaning of tonic can be broadened to refer to a "main," "central," or "focus" tone or chord, which may be achieved rhythmically rather than harmonically.
Overall, the tonic chord plays a crucial role in establishing the tonality and providing a sense of stability and resolution in music.
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