Arkos Tracker
Arkos Tracker is a music and sound effect composing tool that runs on a PC or Mac (i.e. it is not a CPC tool), but which can be used to create tunes for Amstrad, MSX and Spectrum computers.
Arkos Tracker and its tools are built using the .NET framework.
To run the tools under Linux, you need to install mono then you can run them with "mono <filename>" e.g. "mono AKSToBin.exe Songs/Demo.aks".
For the tracker itself, it is not yet possible. I attempted to get it to run. I used the winetricks script to install, "Mono for Windows" and some fonts, but still it doesn't work.
winetricks mono210 winetricks corefonts winetricks tahoma
If I had been successful, it should have been runnable with "wine ArkosTracker.exe". It needs to be run through Wine, because it talks to some Windows API functions directly.