There are 5 projects called "Placid".

1) - A Industrial Project from the Spanish Members of Proyecto Mirage:
http://www.discogs.com/artist/Placid

2) - A Digital Hardcore / Industrial Rock project.

3) - A Techno Project:
http://www.jamendo.com/en/artist/placid

4) A DJ from Bristol specializing in early Chicago House.
http://www.acid-house.net

5) Mannheim, Germany punk rock band

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