Subsequently, Sudanese popular music evolved into what is generally referred to as ""post-haqeeba"", a style dominating in the 1940s, 1950s and 1960s. This period was marked by the introduction of tonal instruments from both East and West, such as the violin, accordion, oud, tabla or bongo drums. A big band style with a string section and brass instruments came into existence, mirroring trends in the West. "Post-haqeeba" music, mixed with Egyptian and European elements has also been called "al-aghani al-hadith" (modern songs).