Niagara is the third 四's song. It was not recorded live like the previous songs, but it was remixed and finally it was taken from the "selftitled1" album. You can download it from 四official.xf.cz as a free outtake. This song features Johnny Nasilnik on vocals. Read more on Last.fm.

四, also known as YOTSU, is a strictly individual project of filmmakers Jakub Hromádko and Erik Richard H. It can be described as industrial and expressionist, heavily influenced by the ambience of the members' hometown Mlada Boleslav, which is known for the car industry, and Rychnov u Jablonce nad Nisou, which is a small town in the woods. This combination can be marked in the genres as a mix of noise and ambient. on July 2011 the compilation of all promo tracks released since 2009, called Thailand: mini CD (or simply just as miniCD), was finally released for free download on the project's official blog. 四 features also Jakub Brych as an additional member. See track info for details. The project remains inactive since the beginning of 2012. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.