I was just browsing on Jamendo when I did a research on the Amstrad keyword, and found the page of Kangaroo Musique, a well known musician on Amstrad scene. If you are fond of Amstrad CPC games music, listen this album : The Alan Sugar Trash Orchestra.

And if you are german or if your german isnt too rusty (mine is quite rusty), you can read Kangaroo blog.