I've learnt how to write chords and use diatonic chords, I just don't understand when I should use a chord progression or melody. For example In the chorus of the song say I have a pluck sound from a synth, do I write a chord progression or melody? Obviously chords contain more notes so they sound bigger but you can always (in massive) just bump up the number of voices per not to make melodies sound bigger. Also what sounds should I use chords or melodies for? Is there any sounds I shouldn't write chords with and any sounds I shouldn't write melodies with? Thanks