There have been multiple artists called Decorum, including an American post-punk band, a drum and bass group, a Czech rock band, an Austrian thrash band, an English hard blues rock band and an English post-hardcore band.

1. A 3 piece post-punk group from Brooklyn, New York using just two basses, drums, and dual male/female vocals http://www.decorum.nyc/
2. A drum and bass duo with 2 releases on Liftin' Spirit Records
3. A rock band from Chrudim
4. A thrash band with one ep released in 1994
5. A hard rock blues band https://www.facebook.com/Decorum-97297053464/
6. A post-hardcore band from Leeds, West Yorkshire, England (2003-2005) Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.