Quick key to invert a chord

• Mar 19, 2018 - 21:29

I've been trying to find a way to do this, but can't. So I'm assuming (I know, I know, not a good thing to do sometimes) it's not possible, and would like to know if this may be something to consider in a future revision. Is there a quick key to invert a chord? What I'm looking to do is say if I have a chord and it is written middle C, E, G, and I want the C to be displayed at the top (so E, C, G), is there a quick way to do that?

I know you can click on the C and hit +, but what if I have a whole bar (or five) and I want to do that? Is there a quick way?

As an extension to this, when changing the key of a song, any way to set it to automatically invert a chord if the notes get too high or too low based on whatever rule I set?


Comments

In reply to by mike320

I knew that, my line above rendered incorrectly because I used less than and greater than to indicate my keys...

I know you can click on the C and hit [ctrl] + [up arrow], but what if I have a whole bar (or five) and I want to do that? Is there a quick way?

I want to know if there is a way to select a bar full of chords, and by pressing, say, [alt] [up arrow] it would allow me to cycle through inversions by moving the lowest note up an octave, and conversely have [alt] [down arrow] do the same thing but in reverse.

In reply to by jeetee

Time? What's that? A new feature? ;-)

Sometimes I write a piece for my tambura orchestra, and I try to keep the notes in my chords within an octave, trying to stay above middle C. Sometimes after I write a piece I change the key but then one of the notes goes outside of the range (ie. writing something in the key of a C with a C chord, the C will be middle C, dropping the song to A would move that note down to A would go two leger lines below the staff), ideally it would be cool if the software would "auto invert" to keep all the notes within a range.

Or, I guess, I could just plan it out better before writing the chords. :-)

Just thought I'd throw that out; thank you to everyone who took the time to read and comment--this is a fantastic community!

In reply to by elsewhere

Very interesting! I always wandered is there any "official" algorithm in music theory for making inversions of chords that span over one octave. With chords spanning one octave (like triad chords and seventh chord), it's easy. You raise the lowest note of the chord for one octave and there you have the next inversion.
You seem to put chord pitches of the chord to the same octave and then sort them to determine how lowest tones of inversions will occur. This looks nice in the score. However I wonder is there any music theory book which explains your method or you invented it?
Best regards

In reply to by Marc Sabatella

True, the bass note (and the bass not only) determines the inversion of the chord. But, for instance, when you have C4 E4 G4 B4 D5, I always wondered is the next inversion E4 G4 B4 C5 D5? This is because I learned that when you have an interval you can find it's inversion by raising the lowest note by an octave. The same holds for a chord that spans one octave. By using the same logic the next inversion would be E4 G4 B4 C5 D5. But I think here is presented another solution D4 E4 G4 B4 C5 which probably works better.

In reply to by hstanekovic

You learned incorrectly - although it's a pretty common oversimplification found in a lot of teaching materials. There is no such thing as a "next inversion". Assuming you mean C to be the root of that chord, then anything with C in the bass is root position. Octaves don't matter in the slightest. Anything with E on the bottom is first inversion - again, regardless of octaves. So if you start with C E G B D, then any combination of those pitches in any octave is first inversion. Doesn't matter if you take you original voicing and raise the C an octave, or lower the E an octave, or both, or just add a new E (doubled) leaving everything else alone), or completely scrambled all the octaves. Any voicing of that chord with E in the bass is first inversion, and no one such voicing is any more the "next" inversion than any other.

As I said, in most musical contests, the voicing is chosen based as much on the top note as anything anything, so you typically would opt for voicings that preserve that, assuming you have a voicing you like in some given content t and you just want to change inversions. Changing the top note wouldn't normally make musical sense - it messes up the voice leading.

In reply to by Marc Sabatella

I would not say it's incorrect. An interval has one root position and one inversion, a triad chord has one root position and two inversions, and seventh chord has one root position and three inversions. "Next" is well defined because there is the sequence: root position, 1st inversion, 2nd inversion etc.
Of course, many possible chord voicing exist for a single position (but that was not my question). Or we can call all them as different positions, but then we should classify them as positions that are "root positions", positions that are "1st inversions" etc. For intervals, triad chords and seventh chords, for each position (root, 1st inversion...), there is exactly one voicing in "close position". So I should probably mention the term "close position" before to be clear.

In reply to by hstanekovic

Yes there is a sense in which first inversion is the "next" inversion after root position in numerical order, but my point is, there is no specific voicing of first inversion that is any more "next" than any other. As I have been explaining, literally any combination of those pitches is first inversion if E is at the bottom. Octave simply doesn't matter - it is completely irrelevant from the perspective of defining inversions.

But yes, if you are limiting consideration to close position voicings for some reason - certainly not a musical one, as I have been explaining that rarely makes sense - then there is only one first inversion close position,. It still doesn't make any logical sense to say it is any more the "next" first inversion voicing than any other would be.

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