43zla is a Serbian

Serbs

The Serbs are a South Slavic ethnic group of the Balkans and southern Central Europe. Serbs are located mainly in Serbia, Montenegro and Bosnia and Herzegovina, and form a sizable minority in Croatia, the Republic of Macedonia and Slovenia. Likewise, Serbs are an officially recognized minority in...

 hip-hop group from Kotež

Kotež

Kotež is an urban neighborhood of Belgrade, the capital of Serbia. It is located in Belgrade's municipality of Palilula....

, a neighbourhood in Belgrade

Belgrade

Belgrade is the capital and largest city of Serbia. It is located at the confluence of the Sava and Danube rivers, where the Pannonian Plain meets the Balkans. According to official results of Census 2011, the city has a population of 1,639,121. It is one of the 15 largest cities in Europe...

, Serbia

Serbia

Serbia , officially the Republic of Serbia , is a landlocked country located at the crossroads of Central and Southeast Europe, covering the southern part of the Carpathian basin and the central part of the Balkans...

. The group's original line-up was Timbe

Timbe

Rašid Kurtanović, also known as Timbe, Fotelja, Timjah da Sensei or Bdat Džutim is a Serbian MC, DJ & beatmaker and a member of hip-hop former groups Bad Copy and 43zla. He is one of the most respected MCs in the Balkan region.- Biography :He was born on 13. April 1978. in Belgrade...

and Ajs Nigrutin

Ajs Nigrutin

Ajs Nigrutin is a Serbian rapper....

(members of the group Bad Copy

Bad Copy

Bad Copy are a popular hip-hop group from Belgrade, Serbia known for their humorous lyrics and slang. The members are Ajs Nigrutin , Timbe and Wikluh Sky...

). Their first singles were "1,2 akcija", "Kontrabas" and "De je kesa".
Later, four more musicians, Bvana, Moskri, Mikri Maus and Eufrat joined the group.

Origin of the name

43 is the number of the bus

Bus

A bus is a road vehicle designed to carry passengers. Buses can have a capacity as high as 300 passengers. The most common type of bus is the single-decker bus, with larger loads carried by double-decker buses and articulated buses, and smaller loads carried by midibuses and minibuses; coaches are...

 that frequents Kotež, the part of Belgrade

Belgrade

Belgrade is the capital and largest city of Serbia. It is located at the confluence of the Sava and Danube rivers, where the Pannonian Plain meets the Balkans. According to official results of Census 2011, the city has a population of 1,639,121. It is one of the 15 largest cities in Europe...

 where some of the members (Timbe, Ajs and Eufrat) live and the others (Bvana, Mikri Maus) like to hang out. The suffix "zla" means "evils" in Serbian. Phonetically, the band's name is pronounced chetres-tree-zla in Serbian. It has double meaning, since the ree-zla part (rizla

Rizla

RizLa+ , known in English as Rizla is a brand of rolling papers and cigarette tubes or blanks in which tobacco is rolled or stuffed to form handmade cigarettes....

) means smoking paper, so in Serbian slang

Slang

Slang is the use of informal words and expressions that are not considered standard in the speaker's language or dialect but are considered more acceptable when used socially. Slang is often to be found in areas of the lexicon that refer to things considered taboo...

 it means 40 rizlas ("Četr'est rizla") or 43 evils (Četr'es tri zla).
It was one album project which involved all the most popular hip hop MCs and bands from Serbia, such as Bad Copy, Beogradski Sindikat

Beogradski Sindikat

Beogradski Sindikat is a Serbian hip-hop group from Belgrade formed in 1999. It currently consists of eleven members. They have released three albums,first one highly acclaimed and marked the beginning of second wave of Serbian hip hop.-Group members:* Žobla - MC * Ogi - MC Beogradski Sindikat...

 and Prti Bee Gee.