H.A.T.E (Hostile All-Terrain Encounter) was a Zaxxon clone written for most of the home consoles of the 1980s, including the ZX Spectrum, Commodore 64 and of course the Atari ST. It's sad that a lot of the emulated versions of this game don't work as the copy protection kicks in shortly after play. In fact, this game was so obscure that I actually had to upload it to YouTube myself, as there wasn't a copy to link to.
Upon loading up and after a lengthy wait going through developer logos and the Gremlin publisher intro, you were greeted by this; a snarling, loud title track with some excellent emulated toms/drum fills. This quickly moves on to some quirky and catchy square lines and has to be one of my favourite chiptunes from the Atari ST era.