SBP4, also known as Samoe Bolshoe Prostoe Chislo, is a Russian electronic music group formed in 2006 by Kirill Ivanov and the duo EU. The group's debut album Самое ÐолÑÑое ÐÑоÑÑое ЧиÑло was released on May 4, 2007 through friends before being officially distributed by Oleg Nesterov on his label Snegiri. In 2008, they collaborated with various musicians for the project SBPC-Orchestra, resulting in the album СÐÐЧ ÐÑкеÑÑÑ. The group's lineup evolved over time, with notable members including Ilya Baramiya and Aleksandr Zaitsev. Their subsequent albums include ФлÑÑка (2011), ÐеÑной ÐÑакÑл (2012), and a split album with Cassiopeia titled ÐоÑÑ ÐеÑни ÐÑÑг ÐÑÑга (2013).