may I ask if these are the templates to link to equivalent composers and works pages from CPDL to IMSLP? I suggest using initials IMSLP but referring to "the Petrucci Music Library", rather than expanding the five letters out; and interwiki formatted links are better, since names and titles of pages that include diacriticals or other troublesome characters (e.g. any works by Antonín Dvo?ák!) don't have to be translated into ISO-8859-1 equivalents beforehand - the wiki automatically generates the correct url, behind the scene. Besides which, there's already an interwiki link on CPDL for a certain "pml" that does not
redirect to here!
As to the question of "overstepping the original query", there was a long-running thread (I'll link to it if I can find it) on the question of the second name. The first name has problems: sure its functional, but it is a bit of a mouthful, and anecdotally, a number of my musically-inclined friends whom I've quizzed will remember the "International" and "Project" at each end, but will usually fudge the order of the middle three words, and the S word isn't always "Score". There's not an easy way to pronounce IMSLP as an acronym ("im-slip" is one of several possibilities) as opposed to an initialism ("eye-em-ess...")
Petrucci Music Library is a much easier title, if not quite as descriptive.