i'm pretty pleased with my speed and dexterity. but my main concern is my skill as an accompanist - i want to be able to sit in with artists and lay down some great, supportive lines without wasting much of their time. i'd love to be good enough at this to get called in for studio and live work. i honestly don't know how i should be spending my practice time to fix this problem (but at least i've pinpointed my goals and shortcomings - that's gotta be worth something, right?). anyway, i'd really love any advice i could get for improving in this area.