When my buddy the Dragon comes to train with me, I don't listen to any music. He tells me it will make my mind stronger haha. When I'm alone, it depends on what I'm doing. HIIT, no way I am doing that shit without music. Long, drawn out workout with a shit ton of reps and sets? Music or I get bored unless the weights are insanely heavy. Short, brutal workout? I can focus a little more without music. I find the longer I workout at the same gym, the less I can listen to music. People come talk to me all the time, I have mass appeal I guess 😛