Söker solist till utomhusvigsel Sthlm juni

Hello, I hope anyone can help me. I live in France and I sing. I sing this summer in a smaal town in Bretegne and I have plaaned the song "latt som en sommarfjaril" of Benny Andersson. I look for the sheetmusic, or partition .\I would be super gratefull if anyone could give me this or tell me where and how to get it.
Thanks a  million , gerada
lacloture.org/