Music for several instruments is normally produced both in a full score and in separate “parts” that
each contain the music of just one instrument (or sometimes several). Parts are rather different
than full scores: they only contain notation relevant to the instrument; parts for transposing
instruments can be in a different key; and the music is laid out differently, often on paper of a
different size.
Fortunately, Sibelius takes care of all of this for you, automatically formatting, transposing and
laying out parts.
What are dynamic parts?
Other notation programs require you to “extract” parts for each instrument as separate files, which