Doujin are non-official self-published Japanese works which can be based on official products or completely original creations.
By nature, doujin music is self-produced at low cost by independent artists.
Home-studio software is typically advantageous to doujin music composers, as it is cheaper than studio-mastering live instruments.
[citation needed] Doujin music artists can be solo or band projects.
Each member of a group usually has their own individual site on which they release their personal works, free to download, and possibly give updates about their involvement in upcoming albums.