A diminished seventh chord contrasts from the half-diminished seventh chord in its seventh note; the half-diminished seventh is a diminished triad with a note added that is a minor seventh from the root. The minor 7th is again decreased by a semitone and hence is equivalent to a sixth (6) - only the theoretical approach is different. The half diminished chord (m7b5) has a minor seventh (7) - it's a m7 chord wth a flat five (b5). Since a diminished seventh is enharmonically equivalent to a major sixth, the chord is enharmonically equivalent to (1, ♭ 3, ♭ 5, ♮ 6). Because of this, it can also be viewed as four notes all stacked in intervals of a minor third and can be represented by the integer notation {0, 3, 6, 9}.. The diminished chord has a diminished seventh (dim7, °7). The below diagrams show you how to play the B Half Diminished chord in various positions on the fretboard with suggested finger positions.. B Half Diminished chord attributes: Also known as: Minor 7 flat 5 (m7b5) Interval positions with respect to the B major scale, notes in the chord and name variations:. The Solution below shows the C half-diminished 7th chord in root position, 1st, 2nd, and 3rd inversions, on the piano, treble clef and bass clef.. The Solution below shows the C-sharp half-diminished 7th chord in root position, 1st, 2nd, and 3rd inversions, on the piano, treble clef and bass clef.. E half-diminished 7th chord. What's a Half-Diminished Chord? C-sharp half-diminished 7th chord. While dominant seventh chords are defined with reference to a scale, it would make no sense to do so with diminished seventh chords. Half diminished chords come from the locrian mode which is the 7th mode of the major scale. If you look at the half-diminished chord voicings above and you know your major seventh chords, you will notice that the m7b5 chord shape looks familiar.. The most interesting uses of the Half-Diminished chord as an upper-structure are found over Dominant chords: For C7(9) play Em7(b5) (Half-Diminished upper-structure from the 3rd of the dominant) For C+7(b9) play Bbm7(b5) (Half-Diminished upper-structure from the 7th of the dominant) Scale intervals: 1 - b3 - b5 - b7 These are built by combining a diminished triad chord with a minor 7th interval which in C would be C, Eb, Gb and Bb. Half-diminished chords are built with: Root (1) minor third (b3)Diminished fifth (b5)Minor seventh (b7).They are also known as minor seventh flat five chords (m7b5), because they are minor seventh chords with the fifth lowered by a 1/2 step.. You can see in the chart below the comparison between a diminished triad and half diminished chord formula. Ciao! If you lower the root of a m7b5 voicing with a half tone and keep the rest of the chord tones, you will get a maj7 voicing. While the diminished triad is a chord in itself, you can think of it as the common building block used to create its big brothers: diminished 7th and half-diminished chords. C half-diminished 7th chord. Therefore, the half-diminished seventh chord is one of the essential seventh chords that should be in the chordal vocabulary of every serious pianist or musician. Half diminished 7th chords. The Similarities Between Maj7 and Half-Diminished Chords. That will be all for today. Next, we have half diminished 7th chords. The Solution below shows the E half-diminished 7th chord in root position, 1st, 2nd, and 3rd inversions, on the piano, treble clef and bass clef.. One common way to use this chord is as a ‘passing’ chord in between chords IV and V, like this: The diminished 7th chord takes up where the diminished triad left off, adding a diminished 7th interval (nine half … The half-diminished seventh chord is one of the essential chords in playing the minor 2-5-1 progression. The second type of major-key progression uses the half-diminished seventh chord on the sharpened fourth degree of the scale: that is, the fourth degree of the scale but one half step higher. As such, a diminished seventh chord comprises a diminished triad plus a diminished seventh.