Aside from being a composer, are you also a DJ? Reason asking, it's mainly DJ's who use Mashups and yes, technically that is what I am seeking to do. Would you mind if I were to send you 2 mp3's then maybe you can tell me how the DJ was able to do that mashup please? If yes, I can send you 3 files, the mashup itself and the 2 individual tunes used. If so, you can let me know how to get those 3 mp3's to you.