There is more than one artist with this name.
1) Janus were a UK band who had much more success in Germany than in their home country. Hard rock was the name of the game, and it is exemplified perfectly in the opening track to their sole 1972 album. 'Red Sun' is the song that prompted me to get the album after I heard it on a compilation tape some years ago. Guitars crash and the vocals soar to deliver a classic hard rock song, with a guitar solo every bit as good as the song deserves.