Question on C7/Cm7 chords

[Groovin1122]

If I am playing off of fake chords/guitar chords and it says to play a Cm7 should I play the B on the G string? That is my minor 7th. Or is it acceptable to play my minor 3rd as it highlights that the chord is minor?

An example is in this song. There is a Gm7 and a C7 is that telling me to play the 7th chord there? Major/minor.

 

[elgecko]

You should play Bb since B is the major 7th of C. Depending on what function your bass line is serving, any note in the chord would be fair game.

 

[Malcolm35]

C7=R-3-5-b7
Gm7 = R-b3-5-b7
The Gm7 has both a flatted 3 and 7.

Got a little lost in your question. However minor needs the b3 and if the seventh is also used it two should be flatted. A C7 is a major chord so it would use a 3 then a b7 makes it a C7 major dominant chord...

Hope that helped.

 

[mambo4]

The natural B only shows up in C Major 7th chords
confusingly, "7" in a chord symbol as in "C7" assumes a flattened seventh
unless it is explicitly marked as a major 7th.
If the symbol does not include "maj", "M", or the triangle symbol ( ∆ ),
then assume a flat seventh

That said, the English term "7th chord" is a kind of ambiguous,
and is sometimes used to include "any chord that is a triad plus a seventh"

For my money "C dominant 7th" is the least ambiguous wording for it.

chord symbols always break down into triad + extensions

the triad is either X (major) or Xm (minor)
the 7 is the weirdo extension, assumed flat unless marked major
all other extensions will have any flattening /sharping marked

C7= C major triad + flat 7th
Cm7= C minor triad plus flat 7th
C ∆ 7 = C major triad plus a major 7th

The symbols are less a matter of technical specification and more a matter of convention evolved over time
So you will get some variation in how different people notate.

 

[g-dude]

If I am playing off of fake chords/guitar chords and it says to play a Cm7 should I play the B on the G string? That is my minor 7th. Or is it acceptable to play my minor 3rd as it highlights that the chord is minor?

An example is in this song. There is a Gm7 and a C7 is that telling me to play the 7th chord there? Major/minor.

You don’t need to make the 7th high - it can also be low.

As to what to play, consider what the melody is doing and the other instruments.

You can’t go wrong with the root on the first beat, and you can’t go wrong with another chord tone on the third beat. Unless it doesn’t sound good.

Beats two and four, or the eighth notes between them are free for chord tones and non-chord tones that help you move the bassline along.

If I was playing Gm7 and then C7 in the key of F, I might play:

G F Bb B | C B Bb A

That basically gets me root-m7-m3 and then a non chordal tone to take me to the C7. Then I get root-nonchordal-m7-nonchordal as I go chromatically down.