Biography
There are at least six artists known as Ratio:
1. Ratio is a Berlin-based Techno act by Michael Peter and Martin Retschitzegger. They originally came from Vienna.
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2. Ratio is the alias of electronic musician Michael Hoffman, out of Brooklyn, NY. He has released two albums: Amblypygi and Public. He has also provided four songs for the pre-show music of "Journey to the Stars," the 4th space show from The American Museum of Natural History.
3. A drum and bass producer.
4. An industrial rock band from Madrid http://www.reverbnation.com/ratioband
5. An electronic music project by Samin Tejas from kerala , India.
6. A Brazilian experimental artist.
Biography text from Last.fm, available under CC BY-SA.