If your boyfriend has any type of file regarding the song on his computer (ie. lyrics typed out, music written on the computer, upload of him singing the MP3, etc) it will have a DATE STAMP on it that will prove it is his. Have him contact the mixer and tell him that the song is copyright to him, and that if he uses it in any way, shape or form he will be hearing from a lawyer (copyright exists as soon as something is created).
On the magical side of things, Hoodoo the CRAP out of the mixer. Seriously--if he's doing this to your boyfriend, he's likely done it to others and will do it again. I suggest a simple hot footing, as well a honey jar to entice him to give the files back.
sounds like a new-ager. personally I do plenty of magick that doesnt have to do with my internal self, and I find that smokin ciggs doesnt hurt my abilties
Ben: I agree. "Universal love"...blah blah blah. *eyeroll* If someone "effs" with me or mine, be prepared to get it back ten times as hard---if not mundanely, then magically. ;)
This happened to me in the mid '90's. When it did, I was extremely angry and upset. As it turned out, it was the best thing that could have happened to me musically. I had played the song in several gigs that were video taped, and sent myself a dated copy. I couldn't prosecute the independent label that picked up the song, they had too much money and were too well connected, but I could prove that it was mine. This launched me from starving artist to legitimate song writer over night locally. I enjoyed two years of playing many, many shows and even selling a few songs. None of them were big hits, but I did get my ugly mug on local TV stations a few times and was able to play music until I grew tired of the lifestyle. It really sucks when this happens, but it can turn into a positive. If nothing else, he can have confidence that his music is good enough for someone to steal.