The tango is a style of music that was likely born in Argentina. And while there is some dissent, most historians think the first tango song was played in the brothels of Buenos Aires in the mid 1800s. The first tango bands included a flute, violin and guitar. The tango sextet, the standard today, is made up of a piano, double bass, two violins and two bandoneones, an accordion-like instrument. Some tango songs are instrumental only; some have vocals too. Tango lyrics were initially funny but in 1917 the words changed to tragic love. Carlos Gardel, the King of Tango, changed the nature of the song. And while tango music was immediately popular throughout South America, the tango dance launched the music round the world.