You might be surprised at how many pop songs are exactly the same ... Using MIDI over USB, it plays the I-V-vi-IV progression in any key. It plays in chord mode, arpeggiated mode, or mixed ...
They all have DYNAMITE chord progressions. Jimmy Webb, Billy Joel and the Beatles are right up there with Gershwin and Rogers and Hammerstein, in my book. How can you write like them? Watch and see.