Hi and welcome!
With regards to synthesis I have always wanted to put the MIDI port of the Telestrat to some use, and then use the Telestrat as a central host for multiple ATMOS and Oric-1 machines, singing in harmony over some common bus, with all the envelope generators and so on being independently programmable. So for me the idea for how to accomplish this Oric cacaphony would be with something like a Telestrat server for the other machines, and in all honesty, as a networking protocol for such circumstances, MIDI is a pretty nice way to do it. As in, MIDI to the rescue: Orics can be networked up with it! We just need to build a usable MIDI interface and a boot-loader/OS for handling such things with Oric-1 hardware. (small detail, 8-*)
If the Oric-1 had a simple MIDI loader, and simple MIDI hardware, we could put them all together on a network and the Telestrat/server could send not only MIDI CC data, but would also allow remote loading of code (SYSEX) and so on. Put ATMOS in boot-over-MIDI mode, spit the file over, oila: Oric is in the 21st Century of networking-being-the-computer, finally.
Heck, we could even do MIDI-DOS whereby the Telestrat acts as a real old-school floppy-disk server for up to 200's of ATMOS/Oric-1 machines.
This was the idea, anyway, and at least its the reason why now I have the Telestrat, ATMOS, and Oric-1 hardware now, as well as a disk drive too, finally. MIDI, not so ready yet, at least on the Oric-1 side. (Telestrat too .. is the MIDI port usable? A mystery yet to be explored..)
EDIT: for storage, use an MP3 player/recorder - these can be cheap if you have a 'big electronics' place near you, I had one for $20 rigged up to my Oric-1 .. easy to set up and nice way to load things.