Dear All,   I´m looking for some way of retrieving musical information from sets of notes. Some problems, for example:   1) This is the first and more needed now: Given some UNORDERED amount of pitches, how retrive the prime  form and/or Forte Number. 2) How to do this from an existing midi file or XML ? Is t possible to  retrive the forte number of every "n" notes of the pitch collection (melody or chord)? 3) Can you circunscribe some notes for