When we say 'dominant' are we talking about the chord built on the 5th degree or any major chord with a b7? I was alos told that the common blues progression isnt all dominants at all. E.g A7, D7 E7 arent all dominants.
Frankly i always thought of dominant chords as being those major chords with a flat 7th. Also if a person came up to me and asked me to play the dominant in, say C maj, do i play the Gmaj or G7th?
Thanks a lot and i hope this isnt too much of a newb question, i honeslty thought i had gotten my theory down. :(