There are at least two artists going by the name Dirty Thirty.

1) Dirty Thirty is a japanese Threash Metal band from Yokkaichi. They´re active since 2011 and released two Demos and one full-lenght album.

2) Dirty Thirty is an up & coming rapper from CT and is soon to put his state on the map. He currently has one solo mixtape out titled Por El Grammi: The Mixtape, and a compilation/mixtape titled Street Poets featuring various artists. He has a duo mixtape with rapper Rolo dropping called Green & Gold, and then another solo mixtape soon after... Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.