Has anyone else noticed how, especially with simplification of pop music, including contemporary pop and praise music, that there are less chords being played? I noticed it first with contemporary pop music. How a song will resolve from the 4 straight back to the 1, whereas I was always used to hearing it go to the 5 first. (Or you can rearrange these) Then I noticed it again when watching Roger McGuinn playing "Turn Turn Turn". He took out a passing chord that he used to play in the main progressions. (I'm not even sure what the chord is). Then I was listening to "Angel From Montgomery" where the end of each verse resolves from 5 to 1 but it includes the passing chord. And I just KNOW that if the song were written today it wouldn't have the passing chord. Or if some people covered it today they would probably remove it completely.