Thanks for the little info on chords.. I'm no music expert...
but I've heard from musician friends comment about music being repeated too many times. After all, there are only so many sequences or combinations of the notes.
the AIVA project, which is an artificial intelligence music composition system certainly brings interesting ideas to the table.
, do you compose songs? would be interesting to hear some of your work.
RE: I-IV-vi-V. The pop music formula for hit songs