Small detail, outsized productivity benefit.
Listen to flow-inducing, world-drowning-out music when needing intense focus.
Listen to disruptive, stimulating, amusing, entertaining music when doing something boring, and let the mind enjoy the music while executing.
Started doing this and it's an extraordinary improvement. I'll put on minimal techno when doing deep work, and then put on 50 Cent or something when doing something boring.
Sounds small. It's actually pretty big. Play with your music choices based on activity, and let me know how it goes eh?