#1
Whats the difference between a Major 7th and a Minor 7th?

Using my common sense I am just gonna say Major 7th's are when you add a 7th to a major chord and Minor 7th's are when you add a 7th to a minor chord. Correct?


Next question.......
How do I construct Diminished chords and Augmented chords?


Thanks,
#2
major and minor sevenths are intervals. a minor seventh is 10 half steps from a given note and a major seventh is 11 half steps from a given note. to construct a diminished chord, flat the fifth of a minor triad, to construct an augmented chord, sharp the fifth of a major triad
#3
Diminished chord - 1 b3 b5
Augmented chord - 1 3 #5

Major 7th - 1 3 5 7
Minor 7th - 1 b3 5 b7
Maj7aug - 1 3 #5 7
7aug - 1 3 #5 b7
Half diminished - 1 b3 b5 b7
Diminished 7th - 1 b3 b5 bb7
#4
maj7 = R, Maj3, 5, maj7
min7 = R, Min3, 5, min7.

Diminished chords: R, m3, b5, maj6
augmented: R, maj3, b5, min6 (i think...its a little late -_- )

i often think of a diminished chord as a 7th chord with a "sharp root". Not particularly musically correct, but if you play a dominant 7th chord and raise the root by a semitone, it is a dim7.
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#5
Quote by Banjocal
maj7 = R, Maj3, 5, maj7
min7 = R, Min3, 5, min7.

Diminished chords: R, m3, b5, maj6
augmented: R, maj3, min6 (i think...its a little late -_- )

i often think of a diminished chord as a 7th chord with a "sharp root". Not particularly musically correct, but if you play a dominant 7th chord and raise the root by a semitone, it is a dim7.


Diminished 7ths - root, minor third, diminished 5th, diminished 7th (not major 6th)

augmented - root, major third, augmented fifth (not minor 6th)