Self taught but would like to learn theory. Using a song I know would help me learn.Will use “/” to show bar. Intro /C C A/C C A G F/F F Dm F D/ Verse /D/ chorus /A Bm/. Thank You.
Hi Stev, bit late to the party but hope your theory journey is going well. Sometimes when odd notes/chords appear it can point towards a mode rather than a diatonic scale, so although C isn’t in the D major scale it is in D Mixolydian, which is basically the major scale with a flat seventh. Used by lots of bands you wouldn’t think, AC/DC, Guns N Roses, Lynyrd Skynrd, etc etc. it creates a nice mix of Major and Minor.
Other times song writers might just grab a chord from a parallel scale so D Major mainly but borrowed the flat seventh from D Minor, confusing i know, but really it all comed down to if it sounds good stick it in there regardless of theory, breaking the rules has made many great songs.
