Love your approach Yan! On one hand, it's important to address the tension students experience head on. On the other, creating small and innocent diversions from that tension here and there can be a nice break.
I believe that sense of humor is a must for career school instructors, because it is great stress and tension reducer. I always try to switch the topics and to tell a joke or two when I see that situation is getting stressful for my students and myself.
I like your line of thinking and those are great recommendations Homer. Yes, music in particular helps a lot. When the weather is nice, stepping outside - even for just a few minutes - can give you a whole new perspective on the world.