For something completely different, check out Tetsuji Katsuda’s free Automated Composing System.
You can make your own original music — select the Internet Application link. All you have to do is select a music style.
The Automated Composing System generates Ethnic Music such as Okinawa music (Japan Traditional), Scotland music and Andes music, Gamelan music as well as Western pops and Classical Music.
Tetsuji’s site also includes a number of Music rooms where you can explore different styles of music, with example MIDI files you can listen to.