There are multiple artists with this name: 1. A popular British rock band 2. A Belgian jazz band 3. A Canadian punk band 4. A British post-punk duo 1) Placebo is a three-piece alternative rock band, formed in London, United Kingdom, when former Luxembourg schoolmates Brian Molko and Stefan Olsdal - who never actually spoke to each other at the time - met by accident at South Kensington train station in 1994.