I've been working a lot lately on the concept of listening to the entire ensemble while you're playing instead of just yourself--but listening to the entire ensemble as if you were just a listener and not actually playing in the ensemble. My quest started when I noticed on recordings of myself that my rhythm was off in some places when in the moment it was not obvious to me. As a listener I find I have much better, more critical ears. Lately I've made a breakthrough (for me, at least). Do you know how sometimes if you're playing something easy and repetitive you will suddenly "drift off" and be thinking about other things or even watching your hands play all by themselves? That's the moment you utilize. You get into that state, but you keep focusing on the music. Anyway, it works amazingly for me. Comments, ideas and suggestions would be very much appreciated!