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In music, the tonic is the first scale degree of the diatonic scale (the first note of a scale) and the tonal center or final resolution tone [1] that is commonly used in the final cadence in tonal (musical key-based) classical music, popular music, and traditional music. In the movable do solfège system, the tonic note is sung as do.
In the key of C major, the first degree of the scale, called the tonic, is the note C itself. A C major chord, the major triad built on the note C (C–E–G), is referred to as the one chord of that key and notated in Roman numerals as I. The same C major chord can be found in other scales: it forms chord III in the key of A minor (A→B→C ...
The diatonic harmonization of any major scale results in three major triads, which are based on the first, fourth, and fifth scale degrees.The triads are referred to as the tonic chord (in Roman numeral analysis, symbolized by "I"), the subdominant chord (IV), and the dominant chord, (V), respectively. [3]
Types of triads: I ⓘ, i ⓘ, i o ⓘ, I + ⓘ In music, a triad is a set of three notes (or "pitch classes") that can be stacked vertically in thirds. [1] Triads are the most common chords in Western music. When stacked in thirds, notes produce triads. The triad's members, from lowest-pitched tone to highest, are called: [1] the root
In this final dominant-to-tonic progression, the leading tone normally ascends by semitone motion to the tonic scale degree. [14] A dominant seventh chord always consist of a major triad with an added minor seventh above the root. To achieve this in minor keys, the seventh scale degree must be raised to create a major triad on the dominant. [15]
A tonic chord has a dominant chord; in the key of C major, the tonic chord is C major and the dominant chord is G major or G dominant seventh. The dominant chord, especially if it is a dominant seventh, is heard by Western composers and listeners familiar with music as resolving (or "leading") to the tonic, due to the use of the leading note in ...
This makes the tonic triad diminished, so this mode is the only one in which the chords built on the tonic and dominant scale degrees have their roots separated by a diminished, rather than perfect, fifth. Similarly the tonic seventh chord is half-diminished. Tonic triad: Bdim or B° Tonic seventh chord: Bm 7 ♭ 5 or B ø7; Dominant triad: F
Only on scale degree 7 the triad consists of two minor thirds and is therefore defined as a diminished triad. Chordal syntax touches mainly four basic aspects. The first is, that the lowest note in each triad functions as a fundament of the chord and therefore as the structural most important pitch. The chord is named after this note as well as ...