<P> In music, the tonic is the first scale degree of a diatonic scale (the first note of a scale) and the tonal center or final resolution tone that is commonly used in the final cadence in tonal (musical key - based) classical music, popular music and traditional music . The triad formed on the tonic note, the tonic chord, is thus the most significant chord in these styles of music . More generally, the tonic is the pitch upon which all other pitches of a piece are hierarchically referenced . Scales are named after their tonics, thus the tonic of the scale of C is the note C. Simple folk music and traditional songs may begin and end on the tonic note . </P> <P> In very much conventionally tonal music, harmonic analysis will reveal a broad prevalence of the primary (often triadic) harmonies: tonic, dominant, and subdominant (i.e., I and its chief auxiliaries a 5th removed), and especially the first two of these . </P>

For the c major which is called as the tonic chord
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