I have a friend that I write songs together with. Actually she writes the melody and text and then it becomesa song by adding harmonics/Rythm and structure. All this is somthing I do because we want to make a group together and I arrange the songs to. The Girl I work with , I have tried to encourage to make some melody , saying just start with an emotion and stay faithfull to it. And she, though beeing a beginner in writing, has made some melodys with text. Pretty well i say , not all of it is very original offcourse , but some of it is quite ok. Myself I have played music proffesionally and been a musician for 20 years, and I have developed very good skills in songwriting so that what was a kindof triviel melody gets value through the harmonical/rythmical/structural that I add to the songs. This is somthing we do together and the songs actually first really comes to life after we both have gone over them. The thing is that want to get clear ,how we should share the copyrigths. As I work for free with no contracts or garanties it will be a better feeling for me if I have a good share on the Copyrigths. How ambigue is the juridic about pourcentage that comes to my rigth. If I take 50% for creating Strukture/Sofisticated Hamony/arrangement on a melody, Is that justifiable? Its things like this that has to be in order before everybody thinks they are The Creater of the world, and to keep a good positive creative relationship on what matters. Thanks!