The last few times I've been to see the orchestra, I've noticed that the bow movements of all the strings are synchronized. I've been in bands and choirs before but never a group with strings, so this just amazes me that there's not a single person out of sync.
I figure the three options are:
- There's some musical standard and everyone just does it the same way.
- It's explicitly notated in the scores from the composer, or
- The section leaders choreograph the movement for each section.
How is this achieved?