I don't think we have enough notes to tell. Look at rehearsal 7. It's calling a Db7 as a Fm6. If that's true (doubtful), then Fm-1 means there is no root. Which, based on what we see, might be the case. But we need more notes. Or possibly that it's barred across all six strings as opposed to something like Fm 2nd which means only barred across 5 strings. Also doubtful.
I wonder if the German note names affects the chords? The Fm6 at RM 7 is obviously inverted. I wonder if the -1 refers to the 7 in the chord and the 5 is assumed. Since this is a guitar score and you can only realistically use 4 fingers, and there is no way to add an F in the middle of this chord, the root would be assumed or the - 1 means to play it down 1 diatonic step as an e-natural in the f minor scale (the 7th of course is raised). I don't know, these are just questions I would ask someone who knows and observations I've made. The D is marked natural in the first chord.
It definitely not correct'standard notation, but based on the context, it's pretty clear to me what the arranger was trying to convey: a chord more normally called Fm(maj7). That is, F-Ab-C-E. The idea is to create a descending countermelody over the course of those two measures: half notes F - E - Eb - D. The "E" is the major seventh of the F minor chord, and someone chose to think of that instead as a "b1" (Fb) and then confused matters further by notating it "-1" rather than "b1".
Outside of this context, there's no way I would have guessed this, but it's such a common harmonic sequence that the answer pretty much suggested itself.
If there was any doubt remaining, see the voicing actually written out in the last measure.
I notice that in other cases in this piece, this chord is used after some kind of Fm chord. Could -1 mean lower the root. The F is lowered, which is the difference between the two chords in that measure. But then I looked at and ignored a D natural earlier.
Not really, adding a sixth to a chord with a major seventh is also completely standard in the genre, it's something one does all the time without waiting for the chord symbol to give them permission. Notic ealso all the G's in the various F minor chords that don't explicitly call for a ninth; same story there.
Comments
I don't think we have enough notes to tell. Look at rehearsal 7. It's calling a Db7 as a Fm6. If that's true (doubtful), then Fm-1 means there is no root. Which, based on what we see, might be the case. But we need more notes. Or possibly that it's barred across all six strings as opposed to something like Fm 2nd which means only barred across 5 strings. Also doubtful.
In reply to I don't think we have enough… by bobjp
I wonder if the German note names affects the chords? The Fm6 at RM 7 is obviously inverted. I wonder if the -1 refers to the 7 in the chord and the 5 is assumed. Since this is a guitar score and you can only realistically use 4 fingers, and there is no way to add an F in the middle of this chord, the root would be assumed or the - 1 means to play it down 1 diatonic step as an e-natural in the f minor scale (the 7th of course is raised). I don't know, these are just questions I would ask someone who knows and observations I've made. The D is marked natural in the first chord.
In reply to I don't think we have enough… by bobjp
It's not a Db7, it's a D half-diminished 7 (D F Ab C), inverted, frequently described and used as "Fm6" F Ab C D.
It definitely not correct'standard notation, but based on the context, it's pretty clear to me what the arranger was trying to convey: a chord more normally called Fm(maj7). That is, F-Ab-C-E. The idea is to create a descending countermelody over the course of those two measures: half notes F - E - Eb - D. The "E" is the major seventh of the F minor chord, and someone chose to think of that instead as a "b1" (Fb) and then confused matters further by notating it "-1" rather than "b1".
Outside of this context, there's no way I would have guessed this, but it's such a common harmonic sequence that the answer pretty much suggested itself.
If there was any doubt remaining, see the voicing actually written out in the last measure.
Here's the whole piano score.
In reply to Here's the whole piano score… by Splops
I notice that in other cases in this piece, this chord is used after some kind of Fm chord. Could -1 mean lower the root. The F is lowered, which is the difference between the two chords in that measure. But then I looked at and ignored a D natural earlier.
In reply to I notice that in other cases… by bobjp
See my comments above. Although it's not at all standard, from the context it is 100% clear this is what is meant.
In reply to See my comments above. … by Marc Sabatella
The D natural still needs explaining.
In reply to The D natural still needs… by [DELETED] 1831606
Not really, adding a sixth to a chord with a major seventh is also completely standard in the genre, it's something one does all the time without waiting for the chord symbol to give them permission. Notic ealso all the G's in the various F minor chords that don't explicitly call for a ninth; same story there.
In reply to Not really, adding a sixth… by Marc Sabatella
Did not known that; No jazzperson I. Thanks!