In C Major, this chord is B diminished: B D F. Play it carefully, listening to the difference in the sound. The scale of C Major on the piano consists of 8 consecutive white keys between C and the the next C, one octave higher. For pianists, learning how to play a C Major scale cleanly and fluidly represents a lot of small steps to make a giant leap forward in ability. To play a major scale, the piano has to follow the W W H W W W H pattern. Building a chord on the seventh degree of a major scale will produce the dark sounding diminished triad. For example, the C Major scale helps with finger organization, multi-tasking and processing ability, consistency, speed, accuracy, and more. C Major Scale starts on the note C of the piano and is the simplest note to play.It does not have any sharps in its form. A major scale is made up of a pattern of intervals, steps and half steps (also called tones and semitones outside the U.S.). If we are to play each note available to us on any Western instrument in an ascending or descending order, then each note will be one half step away from the next. https://piano.wonderhowto.com/how-to/play-c-major-scale-piano-385776 Here are the notes which build up our C Major Scale: Looking at a basic C scale the pianist would end up having to start on the root position, and playing every single white key until they reach the next C. The whole steps are between C to D, and D to E. The half step occurs when E goes to F. C Major Scale. Notice that chord vi is the tonic chord of C Major’s relative minor— A Minor.. Chord vii°- B diminished .