Nice ones Fugidave. Maybe I'm a fussbudget but musician photos where a microphone is covering part of their face bug me. Were I taking photos at a concert I would try to catch their face unobstructed.
Context is everything. If it's a singing shot then the mic belongs. If they're standing/playing then I'd agree. I hate shots where the musician is playing and looking down at their guitar and the mic is in the middle of their forehead.