Productive music? I dont think music is here to be "productive", music should shine with emotions, it should has inspiration text.
But whats true is, that many artists sing only about love, hapinnes, etc...
Because their music have to interest the most people as it can.
And many people including me like good melody, because when i am doing something, I dont notice text, but only melody...
So for me music should have in first place: nice melody, then it should be relaxing (no electronic music "evil") and 3rd place: motivational text.
Good text i found only by some rap artists (but they sing most about alcohol, drogs, gangs, party and such things).
So I dont know what to imagine by "productive music"?
Btw. I am new here! And I am from the Czech republic, so i hope, that my english isnt so bad?