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A minor chord (noted as 1 - ♭3 - 5) has a Major Interval (of 4 frets) placed on top of a minor Interval (of 3 frets). A Major chord (noted as 1 - 3 - 5) has a minor Interval (of 3 frets) placed on top of a Major Interval (of 4 frets). Three note chords made from the root, third and fifth are described by their quality Major, minor, diminished, and augmented. Two or more Intervals played together make a chord. Any two notes played together make an Interval.
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The chords in a Major Key are chords which are comprised of notes in the key. ← B♭ - C - D E♭ - F - G - A B♭ C - D E♭ - F - G - A B♭ → There are seven octaves of B♭ Major on a 88 Key piano. From the root note they are spaced a whole step (2 frets) to the 2nd note, a whole step to the third note, a half step (1 fret) to the fourth note, a whole step to the fifth note, a whole step to the sixth note, a whole step to the seventh note, and a half step into the octave. The Key of B♭ Major (B-flat) is comprised of seven of twelve possible notes in an octave.
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