May i ask about chords theory not related with the modes??.................
So, in a minor scale: the first chord is a minor, the second diminshed, third major, fourth and fifth minor, and sixth and seventh major
in a major scale the chords armony is 1:major, 2minor, 3 minor, 4 y 5 major, 6 minor and 7 diminshed
so far so good, my question is: when and where I can add a maj or min 7 ?, is there any rules? for instance, "if you change the X chord for a maj o min 7 you will get "a blues " cadence........ i know that i colud add to the fifth grade chord in a major scale a 7th minor but really don't know how to "Mix" this things... i am not sure if it is clear what i am trying to say..... Otherwise, i ´ll try it to say again with differnt words.
Muchas gracias
Cosmin!