The world's heaviest metal band, robot musicians "Compressorhead", look set to take the world by storm.

 FRANKFURT, GERMANY (APRIL 9, 2013) (REUTERS) -  They are by far the heaviest heavy metal band in the world - Compressorhead - the robot band from Germany.

Reuters TV joined them during rehearsals as they blasted out the Motorhead hit "Ace of Spades", guaranteed to get any heavy-metal audience headbanging.

The three heavyweights, who were created from recycled metal by a technical artist from Berlin, have a repertoire which includes hits from Led Zeppelin to Motorhead.

With four arms, Stickboy, of course has an advantage over normal drummers and has his little friend "Stickboy Junior", easily missed beside the drumkit, who plays the all important high-hat.

Guitarist, Fingers, who actually has 78 digits, could definitely dwarf some of the world's top musicians.

According to the band's website, Bassist "Bones" is the most precise bassist in the world.

With so much talent, Compressorhead are of course a much sought-after band, having already played at a heavy metal festival in Australia.

Boris Loehe from Gibson Guitars is sure that they will be a hit worldwide.

"I think it is these special robots which are a bit wilder, a bit edged and angular and also a bit dirty. This goes well with the music. People are able to identify with this," he said.

Another reason why Compressorhead could feature more and more at festivals is that they are surely much lower maintenance than their colleagues made of flesh and blood because while human rockers demand sex, drugs and rock 'n roll, Compressorhead's demands are simply nuts, bolds and a bit of machine oil.