For those of you who are interested in arranging, I really recommend you learn counterpoint. I find that counterpoint opens up a whole new world for arrangers, especially if you are interested in writing independent lines for strings. I purchased Counterpointer from ars-nova and have really enjoyed it. The program teaches counterpoint and grades your work, marking all errors such as parallel or direct fifths. Counterpoint may seem old school and dull to some, but I really think it will make you a better arranger. If you are well grounded in the fundamentals--counterpoint, harmony, instrumentation and orchestration--you will be that much better in the long run. RK certainly knew all these and it shows in his work. Just my two cents.