This is the original version of Grieg's Holberg Suite. Compare the piano version (especially the first movement) to the Grieg's own string orchestra version.
If you don't know the string orchestra version, try to orchestrate a few bars. What is challenging about orchestrating this piece? What were your solutions?
Consider the following questions:
What process did Grieg follow in orchestrating this piece
What did he alter and what remained the same?