I'm in the process of writing an article on great chiptunes, great music from 8 and 16 bit computers. Whilst doing my research I made a discovery although I'm sure loads of people already know... I'm a bit late with these things.
There was an advert on in England in the 80's that annoyed me as it seemed to go on and on, funnily enough that was it's sales pitch... it was Ariston. The music it used was from the Gameboy Robocop game, I had the Amstrad CPC 464 version and the game and music were both class. Anyways check it out as the advert retrospectively is actually very impressive.