Re: Music theory question. (chord progression)
Hey Artie,
Firstly, before I go into working out if something is "diatonically correct" (in key) I just wanted to say that if it SOUNDS good to you then it must be good...know what I mean?
Now, onto the question......if those 4 chords are the progression, then the first step you take is to work out what notes are in each chord.....G = G,B,D..F= F, A, C...Bb = Bb, D, F and Am7 = A, C ,E ,G.....now, by putting them in alphabetical order we get: A, Bb, B, C, D, E, F, G, A (again). If you're well versed in scale theory you will recognise that, if we ignore the Bb for the moment, we have an A minor scale (C major as relative major) with no flats or sharps....BUT...that Bb major is telling us to alter the B to Bb over that chord. One way to get past this is to stick to C major/A minor but switch the B natural to a Bb over the Bb major chord in the progression.......it's not as difficult in practise really. Switch the B to Bb over that bar (or both the Bb and Am7 to make it easier) and you'll be fine.