Tango music originated among European immigrant populations of Argentina and Uruguay. It is traditionally played on a solo guitar, guitar duo, or an ensemble, known as the orquesta típica, which includes at least two violins, flute, piano, double bass, and at least two bandoneons, a type of concertina or accordian. Sometimes guitars and a clarinet join the ensemble. Tango may be purely instrumental or may include a vocalist

 

Today, two types of music are popular at Milongas:  traditional tango music from the 1930s, 40s, and 50s.  As well as Nuevo Tango which is either a form of music in which new elements are incorporated into traditional tango music, or an evolution of tango dance that began to develop in the 1980s.