Forum Topic: Why it is hard to sight-read on mallet instruments...
I did a session the other day where I had to double a very specific part. It seemed like an easy pattern, but it changed in subtle ways over time. I was presented with 2 charts: one was a straight printout of the part - no repeats, lots of funny 16ths notes & rests, 6-pages long. The other, a chord-chart that showed the form (AAB, etc.). Even though the musicians involved were experienced pros, nobody spent much time on the chart. This is a very common situation now, as so much music originates out of computer files.