Thanks Mike and Eileen for your help and concern, I think Mike almost got the idea of what I was trying to explain.. jejeje thanks. Clarifying just one thing is that Thai song that I'm trying to get the notes is not a midi file, is a mp3 file. Chord Tracker works with mp3 files in order to extract the notes of the song. If it was in midi format, it would be easy, just transpose +2 and play it in C (according to Mike's example). In conclusion what I did was: loaded the mp3 song in Chord Tracker, with its facility of transpose, I razed in +2, I wrote the notes in a piece of paper, then in the same Chord Tracker edit note by note putting the new ones (+2) and then exported or transfer the file to Chord Looper. Now I have a Loop of Chord y the PSR but with the chords +2 that I wanted. Yes I know this is to much!, but is a way to solve this issue or problem while perhaps Yamaha realizes that the 1- You can't edit chord Looper, 2- The facility of transpose a mp3 file in Chord Tracker doesn't export the new chords to chord looper unless they are hand edited.I hope some day Yamaha can fix these issues. Thanks again Mike for helping me describe my concern, and yes, I prefer to play some songs in C and not in Bb, because as said in my introduction, I do not have formal studies in music notation and scales, and at this moment (64 years) what I want is to play some songs easel and have fun, and not start a music study, noooo my friend that will be in an other life. Programming, yes, because I am a System En ginere and with a bit of knowledge in this kind of equipment and music, so is easy for me to understand and recognize software problems, or lack of efficiency. Thanks Bernardo.