This script will change the Composer tag in iTunes from the format "Firstname Secondname ... Lastname" to "Lastname, Firstname Secondname ...". It automatically checks to see if the Artist tag is identical to the Composer tag and updates it if it is. This was designed for use with Classical composers (who usually have more than a First and Last name, e.g., George Frideric Handel), but will work with any composer name (whether it contains 2 names or 13 names) that is delimited by spaces. It also handles suffixes. It only checks for them by checking the last character of the name.