I didnt know this game, but the Amstrad CPC and C64 mixed music of Great Gurianos by Vincent GR is nice.
There is a longplay of Great Gurianos by Amstrad Maniaque on Youtube.
The game was one of the first written by David Perry. It's a port of an arcade game by Taito : Gladiators. It was out in 1987 by Elite Systems.