My very first demo on CPC, actually written on my brothers CPC464,
before I even had a CPC of my own.
This demo was done for a company; "Expert" which sold TVs, Hi-Fi sets ...and Amstrad CPC 464s!
My brother was working in the company during the summer holidays, and since they sold Amstrad CPC 464, they wanted a demo to run on the computer in the shop.