:nana: Sorry I find a soft (MUSIC MAKER MAGIX) but I'm not sure if it's free or not... a bit confusing in the download Web.
There is a free version but it doesn't have much sounds or instruments, this you buy separately if you want it. It's only free for non-commercial usage, if you want to make money on it you have to buy the commercial license for the sounds you use.
Humblebundle is selling a cheap version of the EDM edition with some soundbanks right now.