I think people see this as a freedom issue. But we are not a truly 100% free society. We have laws that restrict our freedom from doing a lot of things from running red lights to committing murder. We have these laws so that we can function as a society.1- The guy who is so in love with jazz chords he throws them into EVERYTHING (I.E. Honky Tonk Woman.)
2- The guy who has never played or even heard country music who takes the attitude “ I’m gonna show these ignorant hillbillies with their stupid little songs what real music sounds like.”
3- The guy who is so proud of himself for having leaned these chords that he wants to show off how sophisticated he thinks he is by throwing them in indiscriminately.
4- The guy who is perhaps not used to playing with another chord instrument who throws them in without consulting or agreeing with the other musicians in the band, resulting in one guy playing an altered chord against another playing the straight one.
Bands have to have some ground rules too. You can’t have one member deciding he doesn’t like a particular song and play a different one from the rest of the band.
If a band as a whole decides to use jazz chords in a country song, that becomes a matter of personal taste, and yes, they have the right to do that. But if one member decided to use them while the rest of the band is playing simple triadic chords, and the result is dissonance and chaos, I still say that’s wrong.
A major 7th played against a major can sound good if the M7 is in the uppermost register and the major chord is in the lower one. But this has to be agreed upon by all the musicians involved in order to avoid chaos.
Here’s a little experiment you all can try. The next time you get together with another musician, try playing the 2 of them in the same register and listen to what they sound like. I think that once you all hear how this sounds, you’ll agree that it is something that generally speaking, should not be done. (There may be times when it can be done for effect.)
Freedom to play what whatever you want comes the responsibility to play in harmony with the rest of the band.