Many Player Library Entries are preset to do an automatic instrument transposition in the notation view whenever a player of that type is displayed by itself. For example, choose “Edit Player Library” from the “Player Library” sub-menu in the Setup menu. Choose “Clarinet” from the “Player Library Entry” popup menu at the top of the dialog. In the box within the dialog labelled “Notation”, you will see that “Transpose Part” has been set to B flat. This is because a clarinet is a B flat instrument. A Clarinet part played in the concert key of C will be transposed up a full step to the key of D when the part is displayed or printed by itself. This type of transposition does not affect the pitch of a player at all, only the way that it is notated.
